Kids do go otd due to absolutism.
I don’t understand why you equate frumkeit with absolutism.
Additionally, expecting that teens wont find some way to circumvent you is also hopelessly naive – so instead of hanging out in pizza shops they will hang out in 7/11 and dunkin donuts.
Some kids, nothing will deter. Some kids don’t need deterrents.
This is obviously directed at the kids who will be deterred if it’s made more difficult.