@louis I stand with you. Emacs.ch is awesome, obviously NOT a place for antisemites or such, but one instance of rule-violating behaviour (that, when reading it, wasn't antisemitic at all even if it's grossly misinformed) shouldn't be grounds for excommunication - repeated behaviour is a different problem. Trying to block emacs.ch from the fediverse for giving second chances to users is chronically online, tyrannical, weirdo behaviour, and a huge reason of why I don't like the culture of the wider fediverse in the first place.
Block/mute/etc exist for a reason and these instances should use them on users liberally. Not on other instances.