GG Ez Auto reported?

Was leveling up with a friend and after a few games he typed gg ez. He did not say much in most games, but it seemed like every time he ended a game with "gg ez" he would get a warning after. Is the new system just detecting that now automatically or?

Don't get me wrong, its rude. I understand there is a lot of hate speeches apparently given in games (have hardly seen any lately). But I feel this is overstepping the line a little.......