“leave reasoning to the adults.”
And that absolutely flies in the face of what you have advocated in this thread. Instead, you want to eliminate reasoning by government edict and cancel the voices of the adults involved in the scenario.
Adults are persuaded by statements from the manufactuer of a product that 2nd hand smoke is dangerous to bystanders. Adults then vote. Adults vote for other adults who reflect their values. Elected adults then make a law.
Petulent addicts whine about adults being left out.