The CoC explicitly tells you to go see a mental health advocate or psychologist instead of taking it out on the game.
That aside, the general population absolutely must be educated on these behaviors. The admins can't be everywhere at once, and the amount of surveillance to replace players' eyes and ears would have to be enormous and the very definition of a nanny state.
From running my own community for a while, the most important part is the community itself, not the rules or moderators or whatever; the best communities are self-policing, and give an atmosphere where people don't want to be trolls/dicks/etc. Content moderation does not scale.
That aside, the general population absolutely must be educated on these behaviors. The admins can't be everywhere at once, and the amount of surveillance to replace players' eyes and ears would have to be enormous and the very definition of a nanny state.