Basically, Beehaw defederated from some newer instances. Partially because some people were being shitheads, but for other understandable reasons as well.
The moral of the story is, it's ok to be a sh.it.head, it's not ok to be a shithead. Not the same.
hey, I have been here awhile, and while I am not 100% sure the exact issue that triggered this, what I can tell you is generaly the beehaw admin team has shown themselves not to be the most trust worthy team when it comes to lemmy instances, so I would take their story with a grain of salt