For some it's all about vapor. The radical anti-smokers want smoking *include vapor* "denormalized" so that it's not "cool" or common to see. I don't think they care what it is; tobacco, some other combustionable, vapor, etc.
Then take a look at the defeat of Calif's 648. That was done with the help of the local NORML group - LOL! I guess they like our ego batteries. The ecig business has dropped some prices of equip down from $50 to $6 that's modifiable to their useage.
Earlier this year, I saw a Groupon for a "dry herb atomizer" which was a 650mah ego battery and a CE4 with charger for a low, low price special of $70 (extra battery not included). Explain that. It's pretty mixed up.
One thing fairly obvious is that this has nothing to do with public health and safety when everything they seem to be concerned with is marketplace controls and limitations.