There's too many ethical issues with Ai stealing content. Also I'd be worried about the searches on AI sites kinda... overshadowing the original art, you know?
I think it's best to befriend those who make OCs for bot RP or make your own rather than take chars from other peoples work.
Only time I don't care much about that is if it's like people making bots of some major game or show. But never small creators works without express permission, and never humans on any basis at all.
Best to assume an artist would not want AI of their work rather than to assume they'd be ok with it. We don't know how many have been victim to seeing AI fakes of their work or anything!
Not saying that's happened here but many of my artist friends have very strong feelings about AI, even if they're not 'anti-AI', because it's so complicated you know?