It's absurd to think the Federation creates the same type of environment as 21st century societies and that somehow these behaviors will carry on.Reality says that teens will drink well before the age of majority for a variety of reasons that have nothing to do with trauma and everything to do with social acceptance and finding their place in society. Teens are dumb; common sense doesn’t kick in until after 25 and you realize that waking up with a hangover is a great teacher on why you shouldn’t drink to excess.
Point blank.
It is more frustrating to just dismiss this behavior as "teens will be teens" without acknowledging that social learning in society and that a society that values growth and development might not inspire such behaviors.
Finally, this behavior cannot be called "self destructive" in one post and then say "at risk youth are not appropriate for Trek." If you have the behavior as described in Trek then it comes with all.the baggage associated with it.