Vote manipulation is getting more common. Some recent examples:
While the accounts were banned, the malicious voting activity stuck around.
Should admins have the ability to discard votes, and if so, which admins? Should community mods have that ability? Can you think of any ways that tools like this could be abused?
I suppose you mean the limitations per diem on voting is what encouraged the hive mind, but even without those limitations Reddit and Lemmy have developed hive minds of their own, with similarly SOHC behaviors.