That responsibility must move to the parent to ensure young children are using locked down devices that have parental controls and that detect the RTA/adult hea

That responsibility must move to the parent to ensure young children are using locked down devices that have parental controls and that detect the RTA/adult headers. At that point no third parties are involved and all web platforms must do is add a header to any URL that has the potential for either adult or user contributed content that could become adult and require moderation.