AI is unlikely to ever create great works of art because art is not, and has never been just about technical excellence; it is fundamentally a human thing: one human communicating to another. Just even knowing that some art was AI produced is enough to not see it as great: there is no human story or experience behind it, no human context, etc. You can definitely appreciate it in the category of AI work, however.
AI still struggles with technical excellence in some genres of art, but even if they master this, this human element they cannot overcome, by definition.
It's like piano performance: AI can already generate a "prefect" performance audio, a MIDI file can already encode that. But, I hate MIDI files, none of the live-ness, the weirdness, and non-repeatable nuances of an actual performance by an actual pianist.
So what you're saying is it will never be about the art itself, it's entirely about selling you on its origin story? Yeah, that sounds about right. So once it can create human-level art, it just needs to spew human-level BS script along with it for the artist to act out, got it.
Reverse centaur indeed.
Your entire argument hinges on being able to tell the extent to which generative AI was used in the creation of any given piece of art, which capability you will not have. You therefore fall into the category the commenter mentioned in that your perception of the value of a piece of art can be heavily influenced by someone convincing you it was AI generated, regardless of the facts.