Keep in mind that in SC2, you can play single player games against the AI, but those don't count towards achievements. If you want your games to count towards achievements, you have to do a multiplayer custom game. In your multiplayer custom game, you might only be playing against the AI, but because it counts towards achievements, it's automatically considered multiplayer, because you are competing against all the other SC2 players for those achievements. My guess is a lot of people that get suspended or banned for using these 3rd party cheats were not playing the single player mode that doesn't count towards achievements, but were actually playing custom multiplayer games against the AI. It's an important difference, and bans are merited if that's the case.