The are several interesting points in your post.
There's a few things I simply cannot understand about you specifically. The first, is the vaccuous claims about DSD's superiority or inferiority compared to MQA. When you do a comparison. What is the benchmark metric being used here? Your subjective listening, or are you using some performance accepted metric like noise or frequency response observation or what?
The second, and more puzzling, is you admit MQA dun goofed about the lossless claim (only a doormat would grant them the benefit of doubt by allowing them to co-opt the widely held understood meaning of "lossless" and chalking the incident up as a mistake where they didn't properly define the term). I don't want their definition, and the fact that they absorbed the word into their earlier statements and used it in a similar context as everyone else does, but with the hidden intent of supposedly "meaning something else" -- that sort of behavior isn't something you see amongst adolescence beyond comedic attempts. Certainly not the behavior you expect for adults, or purported specialists in the field of audio. Like imagine me co-opting the word lossy for years, but in the end saying "oh well I meant simply high amounts of bit rate bloat this whole time". It's ridiculous at face value, and quite frankly an insult to most sensibilities.
The third issue is, while they have dropped the lossless lingo (though not really as Tidal hasn't when I looked). They still hold to this equally as troubling claim of "original" and "true to the original source" and things of that nature. I'm just not see how this is actually being delivered. I'm not saying I don't see how they CAN deliver -- I'm saying I cannot see how they're actually DOING SO with their current product offering. I don't want to be pointed to patents, and their claims of ADC profiling, as none of that proves that's what MQA IS CURRENTLY doing, since MQA can't be evaluated for the most part (both literally, and also according to you personally, since it seems all probing instances are riddled with falsity in your view).
If this is actually the case, then beyond the realm of psychologically troublesome (by way of placebo and such), what could you yourself be possibly doing that warrants the idea that allows to to assume you're taking a rational position in the assertion that MQA is superior above something actually lossless for example if the goal is to listen to music as intended by the publisher? If we know less in virtue of the claims you make about how we're getting the evaluation wrong by the means we've gone about exploring; why would anything but pure agnosticism with respect to objectively verifiable means not be the default position, and then hard-skepticism, due to MQA's nonsensical behavior and history? I still haven't seen the inference structure that gets anyone out of this ordeal. Beyond of course the aforementioned appeal to anecdotes about end-user experiences as a consumer of MQA.
The reason you're being called a troll by some, is because you subscribe to this perplexing, and needlessly more complexity forming position of some sort of revisionist of diction. Like when you say things like "
When the thing is, it transforms noise, but leave music untouched, imho." Even if it were true that it left music "untouched", I don't understand why you feel a transformation of noise (whatever the heck that actually means) is somehow mutually exclusive to such an operation as to somehow now not have an effect on "the music". OP already showed in his example (as flawed as you percieve it to be), his entire file, along with parts that had music in it, were all polluted, and done so in a predictable manner to some degree based on the level of ultrasonic content present.
It's supremely irritating to have to deal with someone where you need to ask him what they take every single word of their statements to actually mean definitionally. "Transformation of noise", that could literally mean anything at the end of the day for example.
Likewise when you make either the ignorant or simply unconventionally put claim about how MQA isn't "lossy" processing. See, for this, the main frustration is that you seem to not understand why the claim is irrelevant. EVEN IF the encoder was doing a lossless process, for whatever reason, the end-result it ends up spitting out a file that isn't identical. Now you claim "that's what happens when you plop in a test tone". But the normal person wouldn't care, as I could plop in test tones all day in lossless formats, and there wouldn't be an issue beyond perhaps with something that rubs up against the idea of encoders and decoders themselves. Why is it that MQA can purport "original true to source" claims, yet their encoder shits itself if a test tone of any kind is present? What is it about this clearly stated issue do you seem to actually protest particularly?
You then talk about "try MQA folks, and see if you like it, instead of throwing stones because you were told it losses information". That's not why stones are being hurled, and if you truly take this to be the reason why, then there is a concerning lack of observational power on your end. MQA could sound wonderful for multiple reasons, likewise it could sound like nothing different (I actually asked if anyone is able to blind test any MQA content folded vs fully unfolded because I wasn't able to blind test a difference in the few albums I realized I had). But none of this has anything to actually do with why stones are being hurled as you characterize. The reason the stones are being hurled, is because corporations swapping in and out of shadows, making claims that can be falsified currently, and not opening themselves up to proper scrutiny that could lay their entire ordeal to rest. Instead they proceed on, like some deranged maniac that believes all Press is good Press. How MQA content is perceived by someone is entirely irrelevant to the history of critique about the company and it's offering. EVEN IF some people can enjoy MQA content because it perhaps offers a version of an album never seen before or something. That has nothing to do with invalidating the claims OP made. The company still flees and works from the shadows as it sees fit, and that will forever keep it in everyone's bad graces.
I urge you to read your post. Virtually every premise you posit, is an assumption of some sort. You're careful not to make any seriously hard-claim, and keep stating on how you're just presenting opinion based loosely on the brute-force acceptance of the company's assertions when referenced technical claims they've purported outside of MQA strictly speaking through extrapolations from patents for example. Or when you say: Also things like: "I think it is obvious: the MQA process probably define conversion parameters in advance". How can something be obvious, but then conclude "well it's probable", and is simply asserted with an explanation that is definitionally the only option available as an explanation (yet not at all elaborated on, as to how such a thing is possible, or why this needs to be presumed). This is a claim you make, that isn't even positted by MQA themselves. Not that it would matter, because if they can't demonstrate how they're doing it, it would be as good as claiming they're magically doing it somehow... All I see in the entire post is a constant stream of "I guess" "I think" "it wouldn't be hard to envision" etc... Like goodness, so much hip fire. The amount of plausibility one would have to grant is staggering.
Lastly, you claim there is personally audible benefit you experience from MQA files. I am willing to actually grant this possibility, if it is merrited by the file being MQA as the reason for the benefit. And not that you have a glass of wine before engaging. Can you please show me (since everyone outside of MQA isn't privy to the entire technical picture) the results that prove conclusively the aspect present within MQA files, that accounts for your preference for them from an audible perspective? Keep in mind, this has to be something that isn't possible with any other format (lossless files run through DSP can't emulate this, otherwise MQA loses it's exclusive beneficial property). What is this thing you are hearing precisely, and where is the evidence you can actually discern it. I would like the results of studies for a preference ideally that matches to MQA as statistically significant, since I have issues with MQA inherently since it's not really based on any psychoaccoustic model. I need to be shown all these beneficial results by means of something like double/tripple blind tested individuals. Lossless files for example are all virtually the same, but I can still demonstrate the benefit of one versus the other in other metrics. Since MQA is lossy, it has it's work cut out for it.
Actually one more thing I have to get on record at the very least. Do you have any vested financial interest with MQA or any friendships among the staff or something? I don't take people to be shills very often at all, but it's getting so bad that for the leaps you take into asserting the things you do, with quite ambiguous wording (generalized and vague on purpose it seems to me), so I just have to ask if you have any affiliation with anyone from the company or anyone involved with business with the company? You are obviously aware of how much presupposing you're actually doing about MQA itself. Surly someone knee deep into it's purported benefits, would be troubled by all the holes in their stories and explanations - by now must have requested a ton of answers from MQA themselves so that you have the technical and objective backing of the knowledge to argue properly for MQA's defence beyond "well it sounds good to me, and I don't see a reason to assume they're lying/false about much of anything". Or is it truly your position that MQA is not something that warrant skepticism at this junction of the strongest kind?