I'm an amateur painter and AI hasn't even kissed high art yet IMO, although it's nominally good at amateur illustration.
I'm going to have to write up a piece on this sometime, my argument is a little too involved for an HN post. But the gist is that the heart of what a fully trained painter does is make personal choices. A quick and dirty example of the difference:
Suppose you train an AI on Picasso's pre-1901 pieces. It's not going to decide it's time for a blue period.