If the respiratory symptom you’re talking about is lung cancer then the rate of that has dropped by hundreds of thousands.
Not smoking works, but maybe people need more freedom to hurt themselves. I’d support that if society didn’t have to pay their bills later on.
True, but I imagine in an environment in which the vast majority of people smoke, the ones who don't will probably still passively inhale a lot more toxins than if no one smoked at all - making the effect size in direct comparison with smokers seem weaker than we know today it really is.
I believe social media and phone use could have a similar dynamic - like the kids said themselves, it's more a "collective action" than an individual problem.
That was what I was trying to get at with that analogy.