Has this ever happened? From what I can tell asking people to fix their issues is the first step, and defederation only happens when they can't/won't fix them yet
Not sure if there's any lore behind it but I've also seen this. The beehaw admins seem to have an habit of making problems go away by pressing the magic button.
Yeah, after reading that I think the defederation was a quite serious mistake on their part that will probably cause a lot of people to abandon their instance.