I've considered this. There's also a huge existing industry and lobbyists whose existence depend solely on the notion that smoking is bad. If everyone stops smoking and starts vaping, they've got nothing to do anymore, no one to get donations or funding from. They're incentivized to create a new boogyman to fight against (e-cigarettes) in order to remain relevant.

I'm thinking of organizations like Truth, D.A.R.E., that sort of thing.

That's all a bit conspiratorial though and I have no evidence to support it.