The last few posts made here, they've shown up, made the most inane, idiotic, and pointless comments, upvoted each other in a frenzy of circle jerking, and generally made a pest of themselves.
They're a nuisance, and add nothing of value to the Lemmy experience.
As I've said countless times now, they don't engage, they drown out. It's not each individual comment that's the problem, it's the overall effect.