I personally think that responsible smartphone use should be learned and practiced, rather than outright banning them.
I think this shows that adults are terribly addicted to their devices and think if they can’t stop using them, children won’t either. They certainly can’t teach how to use phones responsibly if they can’t do it themselves. Unfortunately for children the result is an outright ban.
Anyone else remember doodling, passing notes, or talking in class? I grew up with smartphones becoming popular and such things were extremely common both before and after smart phones. If anything, some of them were more common. Teachers would take away phones but they didn’t do anything about doodling and couldn’t do much against talking in class.