I believe Clive Bates has said that when we agree with adversaries on smoking propaganda, it makes it hard to say they are wrong about vaping propaganda. I have actually said this before I read CB saying it. If they are 100% right about smoking items and 100% wrong about vaping items, then that seems entirely confusing. I think defense of public health would simply reply with, give us time and we'll show that we are at least a little bit right about vaping items. And by that, they mean just mean let us smear the heck out of vaping items. We've already seen what they've gotten to stick in the last 1 to 3 years with regards vaping. So, if you think the smoking propaganda is not something we can change (ever), then won't be too long for that to be the case wrt to anti-vaping propaganda.
Seriously, just do your own research on the smoking stuff. If only researching CDC and the like, then hope you do the same with vaping and stay consistent.
ETA: It wasn't Clive Bates that said what I purported but Carl Phillips. I corrected this is post #11 below.