I was thinking the same thing. It’s definitely not a coordinated propaganda thing. Some people are just assholes. And they like to troll.
But who knows, maybe someone, somewhere, knows about lemmy—some government/interest group—and think it’s worth it because it can be accessed through mastodon, blue sky, etc. The fediverse seems to be a relatively popular subject these days. So, I dunno. Maybe.
But I think some people just suck and think trolling is a good pastime.