Backlash to this tweet boils down to one argument: adults choose better than children about what's in their long-term interests. But the behavioral genetics literature undermines this claim. Parents think they know what's best, but their choices matter far less than they assume.
These phone bans are affecting teenagers, not toddlers. Teens typically know what's in their short-term interest, and they have stronger incentives to act on those interests than the adults around them. We should grant them more independence, not try to control them even harder.