I’ve already stated several times things that can be assessed better by people with broader knowledge and know how. You agreed. — I like sushi
If you think I agreed with that, you didn't understand what I was saying.
No one can be more or less right in assessing anything, or assess things "better" or "worse," than anyone else. Period.
That's regardless of how much they know about the thing in question. Because there are no facts about
quality re good, bad, better , worse, etc. Period.
So that's why no one can be more of an expert than anyone else when it comes to making value judgments, evaluations, etc.
We can disagree there no problems. If we’re talking about paintings or movies there are discernible differences in quality — I like sushi
No. There are no factual differences in
quality (in that sense where you're alluding to the relative value of one thing over another). There are factual differences in things like shapes, colors, textures, lighting, etc. None of those amount to factual differences of quality. There are no facts that
x visual composition is
better than
y visual composition, etc.
just like a classical pianist would appreciate death metal even though they may not find it massively appealing (they’d still likely be a better judge of the music than someone who is tone deaf and into boy bands). — I like sushi
What I said was that they might be more skilled in identifying the objective properties of the music--for example, they can maybe tell you that a guitarist is playing a run off of a locrian scale, that they're playing sextuplets, etc. None of that tells you anything about whether one thing versus another is
better. That same thing goes for something like, "Guitarist A is playing a run off of a locrian scale, but half of his pitches are at least 20 cents off of standard tuning, and he's rushing his sextuplets, whereas guitarist B is conventionally 'on pitch' and he's right in the pocket rhythmically."--That doesn't at all amount to guitarist B being better than guitarist A. You can be an expert in identifying those differences, but they don't equate to anything being better than anything else.
If you're using "quality" to simply refer to "property," that's fine, but we need to make that clear, because when we're talking about aesthetics, "quality" conventionally has a value connotation. No one is going to read the word "quality" in an aesthetics discussion so that it refers to whether someone is playing a locrian or lydian scale.