Perhaps, but it may end up being self-regulating before the admins ever have to step in. If someone gets downvoted far more than upvoted, they may be temporarily prevented from participating. From the 9th point in the Reputation FAQ:

If your reputation drops below 50% you will be given a warning, and any further drops may result in your account being temporarily unable to post comments or snaps. Unwanted activity such as spamming and trolling is a guaranteed route to a sub-par reputation score.