I'm saying the same screen that you can play video games on is also the one you use to engage your headlights. Or put the car into reverse.
From an enforcement standpoint, that's a pretty big deal. You can (and most states have) made it illegal to use a personal device while driving. They can't make it illegal to use the screen in a Tesla without outright banning them from being on the road.
This is really not difficult. If you get caught drinking in the car...DUI. If you get caught on your phone...ticket. If you get caught playing a game on the screen...ticket. Why does everyone need the government to tell them how and what they can do. Does this generation really need there hands held with everything.