Which option is cheaper depends on how you tax/incentives the system. We tax cigarettes so that it becomes expensive and puts pressure on the system to reduce c

Which option is cheaper depends on how you tax/incentives the system. We tax cigarettes so that it becomes expensive and puts pressure on the system to reduce consumption (in addition to raising awareness etc. which is not the point here according to you) So the argument does not hold given we’ve ways to make things expensive/cheaper.