Eh, I just had a run-in with them again.
Trying to get every instance to ban them is a little crazy tbh, and I think you’re right that their entire goal is a blend of trolling and misinformation.
It isn’t crazy because they’re acting in bad faith. It’s crazy because just lemmy is already too big to try and organize a lemmy wide ban. Trying to get a fediverse wide one applied ain’t happening.
Best you can do is report them for the spamming in the instances they do it on.
Reports don’t just go to mods, they go to admins as well. And you can usually contact admins in other ways on most instances.