Definitely criminal. GGMB existed back in the cowboy days of the internet when almost anything went. Most of these people would have criminal records if they behaved the same way today. Bullying, doxxing, identity theft, threatening and stalking users' family and friends, deepfakes, you name it...
People don't know the half of it. There actually was a situation where a fan k-worded and they were someone who had been bullied by these people. Now, I'm not saying anyone was directly responsible for this person's decision to end their life, but I think the behavior you speak of definitely...