Revenge downvoting

Is it considered acceptable to "revenge downvote" by going to a user's profile and downvoting all their posts or comments? I've seen some of this behavior going on and I don't think it reflects very well on the Fediverse or Kbin.

EDIT: Honestly didn't expect this post, of all posts, to be the one to open me up to hate. Thought fedizens were friendlier than that.