The thing is, they don't even play the games you submit. Remember the game that got through the process that was missing the .exe? If anyone at all had played it at Steam that would have been found. From what I've heard there are still three things you can't put in an 18+ game. No exploitation of children is one of them (and that is stated on the Steam Direct page). The other two I can't post and keep it PG13 though.