Why not “Teen Cigarette Bans Miss the Point”?

Just because compliance isn’t 100% doesn’t mean there’s no benefit. Also these things can take time to work, but we do have evidence that bans reduce usage to an extent.

You are conflating cigarette damage with social media damage.

Social media doesn't have to be toxic, just toxic behaviour is rewarded. This is more like "sniper in park causes ban for under 18s". You are keeping the bad things but age gating it. It would be better to remove the sniper in the park.