Part of what makes Grimmmz a target is to the community it comes across as BlueHole giving him preferential treatment and how he comes across as an asshole.
In the past he’s used exploits and bugs to kill people and showed others how to do them on his stream, e.g. shooting people that are under water. However recently a different streamer named Destiny jumped from the plane and when they landed found that no buildings were rendering. He then gets in a car and finds that because of this he can drive through the buildings because I guess collisions are client side. Anyway he spends the match goofing around and trying to run people over while honking his horn. The video quickly hits the top of the subreddit followed shortly by him getting a ban by BlueHole. This upset a lot of people because
A) this was all on BlueHole the guy didn’t go looking for this bug and his only other option would have been to quit the match
B) they didn’t do or say anything about the exploits Grimmz went looking for and purposely showed others how to do
Grimmz also has developed a reputation for blaming most of his deaths on stream snipers and will spend several minutes talking about how “gee it sure is weird they knew I was there”. The way he talks about it strongly comes across as him edging his viewers to do something which if your username matches your PUBG name get ready to have people posting on your profile accusing you of stream sniping. Where as someone like Dr Disrespect just moves on and doesn’t care.
Because of the way he reacts and the way the community views him he’s become a prime target for trolls.
Personally, and I know others disagree, I see this as a classic “don’t feed the trolls”. The people antagonizing him are doing it because of how he reacts. BlueHole banning people just angers more people who go on to do it as well.