Completely agree.
> After age 9 or so, they really can go off on their own without parents around.
I'd say more like age six, depending on the kid. Kids are much more independent and aware than adults give them credit for.
> I wish I could tell more parents to let fucking go.
It's ironic that just doing this -- letting go -- would probably do more good than any "educational" activity they schedule into their kids' lives.