You’d think that one could simply block sites that don’t have the age header set on child computers. This may block kids from hobbyist sites that don’t bother to set their headers as kid-friendly, but commercial sites would surely set their headers properly. Over time sending proper rating headers would become more normalized if they were in common use.

This still isn’t perfect, as it creates an incentive for legislators to criminalize improper age header settings and legislate what is considered kid-appropriate. But it’s still better than this age verification crap.