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.
If it’s always the same users, just block them. I’m also exclusively on Mobile and my app (Relay) has a context menu for users where you can block them. So does Voyager. This is part of lemmy, and sever based (your profile blocks that user). Meaning you will not be served his comments or posts, in this client or any other, or on the Web.