If you care about this and have the time, just start grabbing links from hexbear or reddit or your bookmarks and post them to appropriate non-beehaw communities.
Beehaw is a large, active, “no tankies allowed” lemmy instance that has suspiciously defederated from much of the rest of the fediverse, including its largest competitors lemmy.world and sh.itjust.works.
This potentially threatens the lemmyverse as a system. If Beehaw gains a critical mass of the active lemmy userbase, and continues to defederate from its competitors, it could cause a vicious cycle where everyone goes to Beehaw because “that’s where everyone is.” Alternatively, Beehaw could use the threat of defederation to backseat-moderate other instances and enforce Beehaw politics outside of Beehaw. Either way, federation is defeated if Beehaw gets big enough.
*Lemmy.world is like twice as active as beehaw rn, I think beehaw fucked themselves over with their vetting process
They haven't defederated with Lemmygrad, but they've blocked the GenZedong community. If you go to lemmy.world, click on the Communities tab and search for GenZedong, it won't show up at all. Since that's by far the most active comm on Lemmygrad, that's almost the same as defederating, but done in a cowardly lib way where're technically not doing it.