For me i blocked only a few people and it was because of these reasons: bullying, trolling, racism, calling me names and one time i explained in this forum.
Christopher i think that you can choose yourself who u want to talk too and nobody else can complain about your choice. It would be super weird if other people can decide who you can block or not because it is your own choice always.
Yes and playing the police in discussions people don´t like is also a reason 😉