I agree that social media is a plague. Unfortunately, the legal definition of "social media" is likely to be so broad that it will include things like Hacker News or even old-school forums. The real plague is the infinite scroll, engagement-farming social media like Twitter, post-newsfeed Facebook, Instagram, or TikTok. I'm skeptical that laws addressing social media will target the right problem given how rich/powerful a company like Meta is vs. some guy running an Anime forum.