alt Hacker News> The RTA header is only sent by the server or load balancer by design. Absolutely no action required by web site operators and owners assuming they enabled the header on any URL that is either adult or user-generated content.
The website owners and operators have to decide which URLs get the header. If the categorization is "either adult or user-generated content", then I already covered that for the case of YouTube: i.e., the entire site is denied to kids (whose parents opt in).
the entire site is denied to kids
I also covered that here [1]. Indeed if parents do not enable all of Youtube or Youtube does not move most adult content into a unique URL or their server does not send the header for anything flagged as adult the kids will not be advertised to. They would have to go to a kid friendly site that moderates before a video is viewable or Youtube would have to change moderation tactics. Kids need not visit Youtube. There are kid friendly sites.
[1] - https://news.ycombinator.com/item?id=46152727