Exactly this. You are just abstracting the decision about "truth" to another set of observers.

Every crowdsourced news aggregation site faces the same challenge, too. Digg had serious vote manipulation problems. Reddit's /r/politics section was overrun by pro-Clinton activists, etc. Concerted, concentrated effort can almost always overpower the consensus of average users.

EDIT: to be clear, my point is that if/when this becomes a powerful tool, the incentive to aim it at a broader or different set of goals is overwhelming.