The problem with defederation is the same problem with the position you're taking, that it conflates all opinion with whatever worst thing you can imagine, enabling you to insist that because *some *people are awful, everyone who doesn't agree with the proposition is (or in beehaw's case, everyone who doesn't join their walled garden). This isn't a case of "they don't permit sexism." They didn't permit sexism when they were still federated. Defederation is an extra step--they want you to use their server or otherwise not participate in their communities at all, and the explanation for why is that the people on lemmy.world are sexist. Maybe they're authentically overwhelmed, and it's certainly their prerogative, but one would be wise to examine their stated basis more critically, because heavy handed owners of platform infrastructure is why Lemmy is in this position in the first place.