It's not.
Only really blatant offenses like cussing people out like the TC or actively griefing them and making it hard for them to play are likely to get you strikes.
Unfortunately, that also means that more subtle infractions such as the various forms of cheating people engage in using third party software are unlikely to ever actually be punished, and even if they are, the strike system will ensure that they don't get properly punished even in the event they actually start doing something about the numerous players who've been at it for years.