The "short" version is that he's a controversial person who has a long history of doing (and being accused of doing) controversial things on the internet

This includes (but is not limited to):
- various attempts at pushing/forcing Heyuri in directions that many users (and staff) didn't liek
- buying up websites in ways that caused general suspicion towards his motives (and left at least one previous owner very butthurt and possibly legally insane)
- buying the s*yjak website, who have crapped up a lot of other websites (including Heyuri)
- lots of trolling and posting/writing about himself in 3rd person (he's in ur kuz threads, posting about kuz!)
- picking fights with the administrators of numerious other websites and their communities (or at least failing at defusing the situations to the point where they wanted to stick him in a cannon and fire him into space)
- a lot of general self-promotional/self-aggrandising behavior that grates on the kinds of people who generally use imageboards
- banning ur mom

He's also the sole benefactor paying for and maintaining Heyuri's servers, so regardless of personal opinion, we have to somewhat put up with his occasional shenanigans and -9999999 reputation for now. Until the situation changes, there will likely be kuz-related drama and trolling whenever Heyuri is brought up outside Heyuri, and the same whenever kuz is brought up on Heyuri itself