It goes beyond that. Overwatch is now mainly use to train the machine learning algorithm and confirm cases. The whole VACnet thing is automated and cheaters are now either automatically banned or put in a separate queue so they play against each other until the system (or a human) confirms they are indeed cheating.

Same goes for griefers and ragers, they're assigned a low "Trust Factor" so that they play together, leaving other more serious players play together.