Matt I think I get what you are saying, even though perhaps we disagree on other matters.
Good to hear.
In essence you will hear a high quality reproduction of a low quality source, and yes most would say it is LOW sound quality. But...........
Bingo!
If we are using the term "Sound quality" we are talking about
sound, which is what we are actually hearing. And then we assign a measure of "quality" to that sound.
This has to be separate from the concept of technical accuracy, because technical accuracy itself does not discriminate between differences in sound quality (e.g. of recordings).
..........you are talking recording "Source" quality, that can widely vary, and I think the overall topic is more towards reproduction ability or at the least, the overall ability of a specific media (vinyl in this case) to reproduce signals with high accuracy/fidelity overall.
This arose out of a disagreement that began over the goal of an audiophile. Sal sees the goal as seeking the strictest accuracy possible, I argued a different bigger tent concept - not all audiophiles are buying (or seeking) strict neutrality. It would be pretty strange to say all those guys with stacks of The Absolute Sound, and who have spent obsessive amounts of time and money putting together esoteric systems, aren't audiophiles. Or if an audiophile had Amir's set up...except he chose a tube amp, well then he's not an audiophile. That brings on a strange and petty gate-keeping that few audio enthusiasts will actually survive.
This is one reason I say it makes more sense to think of audiophiles as being enthusiastic about audio gear and sound quality. They don't just care about the music - they have an above average focus on the sound quality of the listening experience, as well as on the audio gear, typically leading to a hobby-level pursuit of their goals.
You don't need SOTA level gear or perfect neutrality in every link of your chain to produce what many people would recognize as "amazing sound quality."
And the point about "sound quality" being necessarily separate from "accuracy" is relevant in any case we are talking about sound and sound gear. It's a principled distinction, which applies whether you are creating sound, or reproducing sound.
If you are in the studio listening via an accurate system, you can evaluate whether the recording you are working with is "poor" sound quality or not. Same with owning an accurate system at home, and evaluating a recording at home. Likewise, in the studio, if a dialogue/vocal track is identified as substandard, a bit too thin with exaggerated sibilance, you can make it sound better, more natural...INCREASE it's sound quality via DISTORTING the sound, using an EQ. The exact same principle applies in the home system: if you are listening to a vocal track with the same "poor sound quality characteristics" and adjust the sound via an EQ in your set up, you can get "better" sound. You are deviating from accuracy - distorting the recording using EQ - but ending up with what most would see as "Better Sound Quality."
The fact you can manipulate sound, either in the studio or at home, to improve the sound quality only makes sense when you understand sound quality and accuracy are not the same thing.
And it allows for the fact that some distortion in playback can, in some circumstances, produce what some may find to be more pleasant or "better sound quality." Of course there is subjectivity involved, but that's the nature of qualitiative assesment. (And it doesn't mean, therefore, that there can't be significant convergence on aspects we tend to think of as "poor" or "good" sound quality).