First, noone has really cheated. If the penalty system PD put in place allows you to do something, and there are no rules against doing so, as much as it may be bad sportsmanship and may anger most, it's not cheating.
This reasoning, if you could even call it that, is why GT Academy got canceled. PD realized they were going to have to babysit people who operate by the policy that if it isn't explicitly against the rules it must be ok. It's cheating, stop trying to rationalize it otherwise.