I started smoking at age eleven (it was perfectly legal, and I'd been buying cigarettes legally for more than half of my life by that point - it was as much a normal part of an errand as picking up a quart of milk or a loaf of bread), and can't say I put a lot of consideration into it at the time. Over then next four and a half decades, I tried quitting, unsuccessfully, dozens of times. Vaping means I haven't been inhaling burning plant matter for years. I'm happy with the harm reduction. The "quit or die" attitude is what needs to die.
The history of smoking is one of killing people more efficiently, ecigs feel like a continuation of that great tradition.
With the exception of certain nasty flavoring agents and such, I think this is quite unlikely. There's certainly no evidence to support it.
To me is sounds like someone saying "I don't smoke any more, I just use cigars instead".