Nailed it! Imagine an artist being "schooled" by an AI about the originality, expressiveness, emotional depth and subtly of execution of their art. Ughh. Thanks but no thanks.
Could AI be a useful tool for artists? Maybe. It could be useful for idea generation, of course. As for art analysis, AI might be useful for an artist to ask similar works i.e. "show me paintings in XYZ style with a similar color scheme" or "I'm having trouble w/ this perspective on the main subject. Where are my angles and proportions the most inaccurate?"