AI doesn't steal from artists. And art is not an original form of expression anyway, its just rehashed ideas with small innovations based on steeped heritage of those before.
Or go and tell me how every anime character is its own completely unique design completely original, without inspiration or technique drawn from those before.
Artists are just getting mad, because AI will eventually make a large part of the normal workflow for them redundant, as its already doing for UX designers, because that is essentially "busy work".
The answers is to stop pretending that your hobbies or passions can be used as a replacement for a steady job, as for most people it can't. And hobbies and passions remain for free time, and not their day job.
Copyright massively hinders creativity and free expression, and people who are against AI are basically just being pro-publisher pro hardcore copyright restrictions, where companies can law fair creators into oblivion.