They don't have fine grained banning because the abuse system was made for a user base that pays them no money, so it's a blunt instrument optimized towards cost savings. Steam I've heard is more fine grained, and might just do online gaming bans or communication bans.
i belive (s)he’s talking about facebook, who’s system has been built for its free users. oculus is just something that they have added later on, without taking time and money to adapt it for the (small number of) paying users.