While I'm not going to have this specific topic in my search history, sexually violent porn very likely does nothing to encourage actual sexual violence. Most studies show that it has no effect on sexual violence at all, some show it decreases it, and only a few studies show it increases it (and those ones tend to have smarter people than me saying they are flawed).
While media can have psychological effects, normalizing extreme behavior doesn't seem to be one of them. That said, I wouldn't trust an ai bro or their ai to handle something like that. At best they don't know what goes into their training sets, at worst they would probably deliberately include csam.
Probably not as bad on lemmy, at least.