I'm still on the fence about blocking Plemora instances though.
The bigots that came in my mentions today were annoying, but not enough to make me block their instances.
Blocking an instance is my final solution if I feel like its users just want to spread their self loathing and hate.
Most of the Plemora users I have come across are definitely assholes, but their 'logic' so absurdly juvenile and shallow, I find it more comical than threatening.