UPDATE:
thank you to nimbus & nacho for promptly investigating him and banning him.
10:24 PM - Nimbus: you can tell your friends who wanted to see this ban that its happening
10:26 PM - Nimbus: he is banned
10:28 PM - Nimbus: he is gonna try to ban him through source mod as well
http://steamcommunity.com/profiles/76561198301088133
https://www.firepoweredgaming.com/sourcebans/index.php?p=banlist&advSearch=STEAM_0:1:170411202&advType=steamid
this was his old account that he used to cheat on dm servers with (and yes, he's the same guy that had tons of threads about his cheating on the tf.tv dm servers): http://steamcommunity.com/profiles/76561198339552712
i honestly shouldn't have to make this thread since i know he gets off to it, but there are a shocking number of good players without critical thinking faculties that give this humongous retard the benefit of the doubt.
the worst part is that he has deluded a bunch of new players in ugc that he's not cheating. he's an extremely bad influence to the small amount of competitive newcomers & he needs to get the fuck out of the game.
for now, do not add up against him. do not let him enjoy any part of cheating. do not give him an iota of your time. if he ever joins, isolate him until he leaves the server.