How do you think smoking went from something nearly everybody did to being taboo? Maybe the labels don’t do anything for the last 10% of the population who still smoke today, despite the taboo, but those labels played a big role in reinforcing public awareness of the health effects of smoking.
No they didn't, people got tired of the smell and public awareness of smoking came from watching family members die. Labels didn't do shit. Smoking was on the decline before the labels even showed up.
Well as long as opinions matter more than data now. Might as well criminalize Tik Tok with one hand and give out free AR-15s to mentally ill 18 year olds with the other.
Warnings probably work better on products you're putting in your body. If you have blackened lungs on the cigarette packaging I can't imagine choosing to smoke.
On social media, you basically have to destroy my experience for me to stop using it in the same way. All effective options are terrible: ads, microtransactions, auto-playing unexpected sounds, nonresponsive interfaces.