There are a lot of tanky posts coming from lemmy.ml. Their whole purpose seems to be to troll and spread their bullshit far and wide. They are nearly as bad as the alt-right. They argue in bad faith and celebrate authoritarian oppression. The beehaw mods might want to consider defederating.
Beehaw’s still on 0.18.4 and from a post I saw a while back, isn’t planning to go beyond that. So user-level instance blocking isn’t an option there, unfortunately.
Instance blocking also only blocks posts; you’ll still see the users from there in the comments. So it’s nice, but doesn’t go quite far enough; you still have to block obnoxious accounts manually/individually.