Listen, these cheats ONLY work if you, as the admin have enabled cheats on your server.
It's not like a person can just join a random public game and start cheating up a storm.
It doesn't work that way... (thankfully!)
So what do you care if people use them on their own private games? It would make the game stupid if everyone used them, which is why at best you'll have one or two servers (out of the 20 or so that exist) use them at any one time and you'll know right away which they are.