The stated reason is that there’s too many bad actors coming from here, so it’s too hard to moderate:
https://beehaw.org/post/567170
Hopefully (as they state in their post), federation will resume once things settle into a new norm.
Or I forsee beehaw losing relevance as it continues to pursue an isolationist policy.
I love the top gear reference, but surely May would have been the obvious choice, Hammond is just asking for a crash!