Today, only a highly privileged slice of the population can make a living making art. Nearly everyone who enjoys making art can't make a living off of it, and even the vast majority of people trying to do it full time still can't make ends meet (hence the cliche of the starving artist). But everyone can make art as a hobby if they'd like, that's what almost all artists do, and that will continue to be true as AI advances.

So I don't see AI art as changing careers much. Even if AI fully replaces human artists, all that means is the 0.1% of people who make a career off their art will have to join the rest of us 99.9% who only do art for the fun of it.