Now that I (I think) understand federation I was going to unblock the beehaw communities since I should still be able to vote and comment on them but I can’t find them now.
In short, the majority of the fediverse was (and probably still is, despite the large influx of redditors?) highly communist in nature, but Beehaw, being predominantly moderated by liberals, were getting so dogpiled for their aggressive anticommunism that they just threw up their hands and started defeferating with any instance that disagreed with them from the left at the drop of a hat. At this point they're probably cut off from 75% or more of the fediverse and I'm sure blissfully ignorant in their little liberal bubble. We're probably not getting them back and to be honest I'm not sure it'd be rewarding to have them back, if their users want proper discourse they can just make an account over here.
AFAIK there were trolls commenting and harassing beehaw communities from .world and lemmy (I believe also Kbin) lack proper moderation tools to counter that. Supposedly it's only temporarily blocked until those required tools are implemented.