+1 sosolidgold. While I also think Bans-... is a psycho prohibitionist who will stop at nothing to remove people's freedoms, and is likely a candidate for a strong psych drug, I am afraid he does make a point in terms of vaping heavily on airplanes. No one should have to be subjected to someone else's vapor, no matter how safe it is. It is generally distracting and concerning to someone who doesn't know about it, and they will spend the whole flight that they paid top dollar for, went through either a scanner or grope-down, and it will make the flight not very enjoyable to them. Perhaps one day when everyone knows the safety of the vapor, this will be different.
That said, our "friend" is having to stoop to outright lying about the dangers. If the vapor is so deadly, why have there been no deaths, or even serious health issues? What exactly is the definition of "deadly". It seems common courtesy would be the better approach.
To me the good news here is that if he is going after in-flight vaping so aggressively, it is likely he has given up on a general e-cig ban. As far as deadly is concerned, perhaps he should make it a requirement for everyone to have a blood test before flying, so that I do not have to sit next to someone with a contagious disease...like whatever he clearly has, and has not treated yet. Wouldn't want to catch THAT bug!