I think that AI art retains the issue that it's primarily shit. Like, deviantart has been overwhelmed by AI generated tickle porn for ages, but luckily for deviantart tickle artists, most of it is garbage images of the same AI woman with different hairstyles laughing while a hand is vaguely in the area. Making good AI art is possible, but it isn't easy, quick or something that some random person can just do with a chatgtp account.
The AI art we're worried about is going to be no different from the streams of crude sketches or poorly written 3 sentence "tickle stories" already clogging smut sites - most content creators are already going to be able to compete against it by virtue of making art that's good.