Roon never claimed to try to be for all sources. Especially not as a HTPC software for your video Entertainment System.
I at least never had the impression or expected that at all when I got into using roon for music.
I'm not sure why you bolded "music," but frankly who the hell cares what the program is? If its program one wants to play back through an audio system, shouldn't it be reproduced with the highest fidelity that system is capable of providing? It shouldn't matter if it's Mussorgsky or Miles or Morrissey or Mary J. Blige...or Marvelous Miss Maisel, or for that matter NPR Marketplace.
And while they offer DSP features, what's the problem with using DIRAC as well if you are not able to create your own convolution filters for your setup? Especially for movie streaming.
As stated way too many times in this thread already for it to have not sunk in, including in the post you quoted, there's absolutely no "problem" whatsoever with using whatever sources one likes (including Roon), upstream of a hardware controller that
applies system calibration filters and, if applicable, bass management, to all the upstream sources before the signal goes downstream to the relevant transducers. That is the sensible approach.
But speaking of "convolution," from a quick scan at least...color me skeptical. It seems applied to home audio as technique primarily devised to satisfy the eyes: generate a visually pleasing graph of "in room response" (a near meritless metric above the transition region) by mauling the full-range signal based on input from a single measurement by a single omnidirectional microphone. What's wrong with all that has been discussed in detail on this forum.
Perhaps there are far more sophisticated and worthwhile uses of "convolution" in calibrating home audio systems, but a quick scan did not find anything that seemed promising for further investigation.
You can buy Dirac for Mac and Windows and tunnel Roon through a virtual soundcard through Dirac. But that's probably too technical for you again.
Not "too technical" but definitely stupid annoying and generally terrible. Not too long ago I took part in a test of some room correction software I believe has potential to be paradigm shifting. Unfortunately, the relevant company could or would not offer the package on normal audio hardware. It had to be loaded onto a general purpose computer. Even using normal computers (an old Intel MBP loaded with the relevant software feeding an old Anthem AVR repurposed as multichannel HDMI-input DAC, controlled via Screen Sharing by an M1 MBP) it was such a headache to use compared to normal dedicated audio hardware. It was worth doing for that limited purpose, but full time and for enjoyment rather than learning? No effing thank you.