I agree that social media is exacerbating a lot of problems right now, and I don't have a ready answer as to how to fix that (or if that is even possible at all - it wouldn't be the first time a society is radically disrupted and reshaped by new tech). One thing I'm pretty confident about, though, is that heavy-handed regulation will not only not solve that problem, but will create many others. Maybe if we had some kind of widespread supermajority social consensus on this, it might have worked, but we don't.