To show how absurd it is, Hawaii attempted to raise the age for smoking tobacco to 100. You can't reductio ad absurdum the left, because they've already gone there. Now they haven't actually done it, but that they would think about it and not fire everyone who suggested it, tells you all you need to know about their attitudes on freedom/tolerance.
Persecuting smoking and smokers is a modern witch hunt among the left, as proven by the intolerance of progressive areas (California, Oregon, Washington, NY, Mass., etc). Of course that's anti-Science. While smoking isn't healthy it's not as unhealthy as a bad genes, not exercising, bad diet, or bad attitude (stress) -- if you can regulate smoking based on public health claims then the state could regulate all those others (and some are trying. Many of the studies were fraudulent to get the laws, doubly so for the second hand smoke scares, or the false (unsupported) claims that it increases healthcare costs (they die quicker so it saves money). It was all flim-flam to allow the anti-liberty fascists to tell us what to do with our bodies, in our property, "for our own good".