Do you mean it happens on several posts other than their own? Yeah it's not isolated behavior for sure. With the change I deployed, they'd have to reply to themselves, making these comments "one unit" at least isolating the noise of it. We'll probably need other layers to manage this kind of stuff:
  1. downvotes
  2. muting/blocking
In either case, it'd also reduce the user's trust losing them sats/ranking.