It looks like this:
rating "RTA-5042-1996-1400-1577-RTA"
It is trivial to configure in all web servers and most reverse proxies. Then simply put the requirement on parents to enable parental controls on their devices. Each parent should be able to decide what is appropriate for their progeny.Instead, people must submit more PII to governments and websites. I can imagine this going horribly sideways. Or perhaps side-stepped? Perhaps usenet and small chan boards will make a come-back.