Out of curiosity I went to exploding-heads.com and it looks like it’s not working anymore. Is there a new place they hang out now? Are they undercover on the regular servers or something? It’d be a little surprising to me if they all just gave up on being active on the Fediverse.
It was, approximately, 4chan reincarnated as a Lemmy instance. They were defederated from more or less everyone more or less instantly.