Maybe they are all relevant upon full scrutiny, but that isn't obvious to me (albeit IANAL). I know what my kids buying a potentially violent video game is like, and I know it is very different than participating in social media. And regarding the CDA in the 90's, take some of the opinion:
In order to deny minors access to potentially harmful speech, the CDA effectively suppresses a large amount of speech that adults have a constitutional right to receive and to address to one another. That burden on adult speech is unacceptable if less restrictive alternatives would be at least as effective in achieving the legitimate purpose that the statute was enacted to serve.
That's just me grabbing a snippet from Wikipedia, but it seems like a different issue than the impact of social media and whether it should be allowed by minors w/o parental consent.
In order to deny minors access to potentially harmful speech, the CDA effectively suppresses a large amount of speech that adults have a constitutional right to receive and to address to one another. That burden on adult speech is unacceptable if less restrictive alternatives would be at least as effective in achieving the legitimate purpose that the statute was enacted to serve.
That's just me grabbing a snippet from Wikipedia, but it seems like a different issue than the impact of social media and whether it should be allowed by minors w/o parental consent.