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.
I don’t think there really can be a long term solution for this sort of thing. I think we just have to block and such as they pop up, defederate if a threshold is crossed. I dunno.