Wow, David!
Well said.
And let me just say, that I think that some yeshivos are moving in the direction you describe. At my sons yeshiva I never see bochurim hanging around outside smoking. And my son came home one day, and told me that an administrator in his yeshiva was seen removing a cigarette from the mouth of one of the bais medrash bochurim. While we debated whether that was the best way to have handled the situation, we applauded the sentiment and creating an atmosphere of “Smoking Not Acceptable” at the yeshiva.