The real reason there's a harassment and misinformation campaign against AI art in Reddit
Money. Half of Reddit is basically free ad space for commission hacks. Fandoms give them a ready-made audience. OC culture, a customer base. Their self-promotion is considered "community".
The commissions are done in private so the hacks are not held to any professional standards or deadlines, or have to start a business, fill paperwork, or pay taxes for this extra (substantial) income.
It's like a cheat code and you don't even need to be good at art to do it (most are really bad). You only need a lot of free time and to be severely chronically online, things these people have in spades.
AI is posed to change all this, so they spread misinformation to gullible fandom teens, whipped them into a moral panic, and set them off on a moral crusade against AI art to protect their hustle.
So now the teens and their handlers are flooding Reddit slandering AI artists, lying, false-flagging, dogpiling, the works. It's a semi-organized harassment campaign, that's why you see controversy over AI art so prominently in comparison to all other issues.