I know, but I think the reality would change if it took 10 seconds to reliably block everything. It would also be the default if you enter an age below 16 at setup (tap a second device or scan a distinct face id to act as guardian). It should also be enforced in schools (and made possible to enforce by schools) as part of their filtering of explicit/harmful content, maybe they can even deploy their own policies eg blocking most phone use during school hours.