We prohibit children from drinking alcohol and smoking tobacco, and while it doesn't work perfectly, it sure has made them use these substances less. I'm a bit disappointed how timid his opinion is. He should be calling for laws against children's device use instead of calling for parents to do it.

I don't think parents will ever do it, not in such quantity that it would matter. Also, if it's primarily the parents' responsibility to do this, it will be the more well-off, more educated and more intelligent parents who will have the resources to do this. The children who need the most help with this problem will again be left to deal with it themselves.