What's wrong with picking mirror? I don't do that, although I sometimes could understand it if people keep picking gurjaras or hindustanis, just getting mirror. At least in my opinion usually civ pickers make people pick mirror, so I would say stop picking civ I guess...Apex of moral deviation is picking mirror in game with 42 cvis.
Also, people are cunts. If they wanna cheat, they will find a way to cheat. It is matter of character, not game or streaming.