And since our society is obsessed with abstinence and refuses to acknowledge the value of harm reduction, any benefit of switching to vaping or smoking pipes from cigarettes is wholly ignored. Babies and bathwaters.
Since cig manufacturers know the public is easily manipulated, all they need to do is point out that the "full dangers" of vaping et. al. aren't understood, vilify the products, and they're back to being the only game in town. At least we KNOW that cigs will kill us.
The unknown, even if it's no doubt less dangerous, is somehow scarier than that.