Meanwhile, the AMA literally had a link advertising a board for sexualized images of young boys above it.AFAIK, no.
Not anymore at least.
I think it was a similar situation to 4chan. For years the site owners looked the other way, but in recent years actually crack down on it.
This is still obviously worse than something like Twitter or Reddit though. It's not allowed on those platforms at all, but that doesn't mean it doesn't get posted in flagrant violations of those rules.