This is a really amusing comment after watching the 9-12 minute segment of the video. :)
For what it's worth, I very rarely run into cheaters. I couldn't specifically identify the last time I ran into one, in fact.
Those who cheat and don't get caught are very good at hiding it. When all it takes to toggle is a hotkey like NUMPAD1 to activate aimlock/walls and NUMPAD0 to turn all cheats off, it makes it almost impossible to identify a cheat.