Beehaw hasn't really defederated from Lemmy. They still allow the biggest Lemmy instance and a lot of smaller Lemmy instances. What they have done is block 2 of the top 4 (hard to count since the user count tools are having issues here on the lemmy side)..
I first had worries about Lemmy and thought about kbin first, but seems the reddit migration has managed to make the issues minor in my case. There's less issues. So, I'm surprised Beehaw had that amount of trolling.
I'll be honest, it's weird to not allow downvotes but be on a federated site. Idk if I'm weird or if that's just me tho. Like if you go to beehaw from another Lemmy instance you can downvote them.