And similarly, all your other points. But of course, the more I say "you've got to prompt it right", the less value the AI is providing. A great AI would of course have that taste on your behalf.
... but I'm not too bullish on an AI having "taste" because the reason people have taste and a POV is because they're living life. Artistic choices are the consequences of past experiences and associations we make unconsciously, which result in a patchwork that holds meaning. A "great AI" would need to imitate that, and maybe they someday will, but we're talking about imitating embodied experience and thousands of sensory impressions that we normally don't even bother verbalizing, or writing, but as humans are able to transform and share.