Aaaaand to throw it all away at the end with "well when the rubber meets the road we'll comply anyway, thanks for inhaling my hot air." Take a damn stand and dare them to sue the hacker known as Linux or whatever.
To my knowledge they require the OS to have an API for websites and services to access a determination of the age range from.
This is a far cry from the breadth of what a "parental control API" would entail even if it would be part of such a thing.
The way you enable them is by the root user typing a number less than 18.