This could have been avoided, at least technically. Laws could have required any site or service that has adult or user generated content to simply add RTA [1]

This could have been avoided, at least technically. Laws could have required any site or service that has adult or user generated content to simply add RTA [1] headers and require clients to make a best effort to detect the headers and trigger parental controls if enabled. That's it. Not perfect, nothing is. All the liability could have gone to the parents where it belongs. Politicians will regret taking kick-backs when those third party sites doing adult checks sell or accidentally leak what sites they visit and what referrer URL's and query strings sent them to the 3rd party sites. It won't be worth it. I suppose one could make lemonade out of the lemons by getting a start on websites that track which law makers are into what kinks. I predict those most outspoken against a thing are indeed into that thing. CDN's already have some of this. 3rd party ID sites will have more complete ID details. [1] - www.rtalabel.org/index.php?content=howtofaq#single