Generally not into defederating but sites that support far right hatred AND also have no intellectual content to contribute whatsoever are blocked. Thats why freespeechextremist is blocked but smuglo.li isn't, for example. There are people on the latter who are intelligent and have interesting (even if still wrong) things to say. fse is an intellectual vaccuum.
@matrix also you absolutely MUST be public about any domain blocks
@matrix i get in arguments with tons of people and have personally blocked a few of them but i think the bar for actual defederation has to be pretty high. there has to be no potential for any positive value for any of your users.