PICS was very complicated and attenpted to cover all possible "categories" of adult content. It was confusing, incomplete and only a handful of sites voluntarily labelled their sites with it. RTA is one simple static header that any site operator could add in seconds unless they get more complicated with it by dynamically adding it to individual videos say, on Youtube which means in that case the server application would need to send that header for any video tagged as adult.

I added PICS to my forums but it was missing many categories of adult content. I ended up just selecting everything as I could not predict what people may upload which made for a very long header.

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dylan604 5 hours ago | parent [-]

> unless they get more complicated with it by dynamically adding it to individual videos say, on Youtube

YT already does this. I never watch YT signed in, and I often see videos that require you to be logged in as the video is age restricted.

	▲	Bender 5 hours ago \| parent [-]
		Agreed though in my example the point would be to set the header in the case the child is logged in but for whatever reason the site does not know their age. Instead of a third party site, a header is sent with the video tagged as adult that triggers parental controls if they are enabled by the device owner.