It won't, but most offenders are repeat offenders. It's hard to get someone booted and arrested without hard evidence. Eyewitness testimony can sometimes be enough, but many actors have low visibility in their hides and masks. Cameras make that process easier and more efficiently eliminate problematic guests. My understanding is that because Orlando does not have cameras in a majority of their haunt spaces, it is extremely difficult for performers to identify and catch perpetrators. Even when they do, it often turns into they said/they said situation.
If you're trying to run a haunt event with no guest-on-performer contact, you're in the wrong business. You have to focus on avoiding creating blocking/hides that put actors in excessively vulnerable positions and do everything possible to address incidents.