The parental controls on Google devices are pretty darned good. I can't see their raw browser history, but I can see what apps are installed and how much they'

The parental controls on Google devices are pretty darned good. I can't see their raw browser history, but I can see what apps are installed and how much they're used, control screen-time, bed-time, ban/grant app permissions on a per-app basis, etc. Blanket banning smartphones from kids is overkill when there are tools available to enforce responsible use.