Devices with child locks turned on really shouldn't have access to everything on the Internet. A simple protocol could let cooperating websites know when child locks are on, so they don't show inappropriate content. Whitelisting or blacklisting could handle the rest.
This doesn't mean every device needs to implement child locks. It also shouldn't affect anyone using unlocked devices at all.
This doesn't mean every device needs to implement child locks. It also shouldn't affect anyone using unlocked devices at all.