I don`t disagree about comparing the harm of the two. Both certainly do cause harm. That is a given we all agree on. But, to say one shouldn`t be regulated or banned simply because the other isn`t is wrong. It bogs things down to link actions on things with a myriad of other things and actions for those.
Exploitation is exploitation.
No need to seek piling on. Others will chime in when they want.
A 10 year old is capable of smoking as well as a 50 year old. A male is as well as a female is. That is parallel comparisons of smoking. Smoking is smoking. "Smoking" is not "Drinking."