Even those who support these and similar policies must acknowledge that the rules reflect a lack of trust that most kids will do the right thing. We protect them, and we control them, and we let them know we don't have much faith in them. We don't expect much from them other than following our rules. But simply following rules is not a sign of real maturity. Neither is imposing rules on others just because we can, or because we tell ourselves it's for their own good.
Teenagers get the worst of both worlds.
We treat them like adults when we want to punish them. And we treat them like children when they want to do something we don't like. What we don't do is treat them like maturing people learning to make their way through life, making some mistakes along the way just like the rest of us. But first let's give them some real power over their lives and a realistic chance that their decisions will make a difference.