Imposing a policy on the whole internet in order to make it safer for children is like imposing a national 4mph speed limit on cars in order to make it safe for children to walk to school.

https://en.wikipedia.org/wiki/Red_flag_traffic_laws

(personally I think there's a lot of non-sexual material which is bad for children but not covered by age verification, like Andrew Tate, but that's impossible to define or enforce)