You do realize that laws like this would apply to sites like HN, Reddit, the comment section of every blog, and every phpBB forum you ever used? It's not just Instagram and Tiktok.
If we want to "ban social media" we'll need a consistent set of guidelines about what counts as social media and what doesn't, and what exactly the harms are so they can be avoided.
I don't believe that's as easy as you think.
Laws do not have to be perfect to be good, but they do have to be workable. It's not clear that there's a working definition of "social media" that includes both TikTok and Reddit but doesn't include random forums.
Yes. Imperfect solutions, when driven by the government, don’t change for decades, causing terrible consequences.
“SSH is a munition” comes to mind.
Not at all. Just the social media sites, which are objectively bad for kids. As an adult, you do what you want on the internet.