suppose you want to get a drink with your friends. Minors shouldn't be served alcohol, so the bouncer outside the bar asks for everyone's id.
Doing that digitally means the bouncer would take all your ids, go in the back, make some copies for himself, add your information to a list, and later share the copies and the list with his mates.
That's regardless of the fact that you and your friends are minors.
On the other side, if the services or devices are harmful, rules should be on them to reduce their harm, like in any other industry.
If I sit in a car, and the tank explodes, I'm not the one at fault, no matter my age, or how I moved my sit to be comfortable.