He (https://voat.co/u/Mumbleberry) is just a psychopath. His goal is to downvote people. He has many accounts around too! He's active in YouTube: See how people complain about him: https://www.youtube.com/user/roofermann64/discussion

And he is active in Reddit also dealing with downvotes and brigading: https://www.reddit.com/user/UlmoVarsch

If you want, make a thread about him, because many people are suffering from his psychopathy.