Did you ever heard a parent asking for this in the real world? Parents who care either don't give smartphones, or dumbed-down ones that they can control.

Asking for less tech at school is not an authoritarian move, but rather a point of view about how schools should work.

If you asked me, I think that parents should throw away their TVs and minimize screen time at home, both for them and the kids. However I won't ask this to be enforced by the State - if anything, it will make my kids more competitive against the cartoons-infused ones of the other parents.