Earlier quoted context omitted.
If cheaters play indistingushable from normal people, the seems like mission accomplished.
Cheaters don't have to play like normal people to avoid detection. They just have to make it expensive to police them. For example, the game developer may be afraid of a even a 10% false positive ban rate, and as a result won't ban anyone except perhaps a small number of clean-cut cases.
This is one of the cases where ML methods seem appropriate.