Drinking isnt parental granted. And a lot of people under 17 are more mature than people of age. It's just how one is raised and their personality.
That's great but you're wrong too. It's a 60%, 40% thing on maturity. No matter what a person of age has a more developed brain than that of someone your age
More developed sure but that doesn't mean they are mature enough to make good decisions like not drink and drive or text and drive or other things.
in case you haven't realized, statistics show that more teens drive while texting or drinking. Either way, ppl of all ages do it