They control Anon downvoats. I saw about 3 weeks ago because I was up with my daughter all night. There was this potato shitposting in annon and it was equally downvoated +8-8 and when I woke up it was +8-0. It was busters I'm pretty sure. there was about 4 of the posts like that and they all did the same.
Gabara can fake ban you from any sub... fake banned me from v/Canadafirst... my own sub I freaked for a sec n tested it...
conjecture: @Needlestack was telling the truth about Anon posts. That's their playground.
Really just sounds like run of the mill brigading. It's super easy to do by yourself. As far as the "fake ban" thing, I've never seen it before but just seems like a security loophole being used to spook folks.
I do agree there's a darker purpose to some shitposting. They want you to be annoyed with the site. I doubt they actually congregate in a single subverse like sbbh. There's some decent sbbh folks like Nadesh etc.