Without evidence of actual harm this is a solution in search of a problem. And a variation of "there must be something wrong with that". Standard ANTZ tactic. Why are you carrying their water?
Eta:. I guess aerobic exercise is equally harmful since that always results in large volumes of direct lung inhales. You might want to see how that plays in the jogging and exercise forums.
Because their tactics played a part in the recently released regulations that affects us all. We can't just keep answering "there is no actual evidence of harm". It's been said over and over that ecigs are at least 95% safer. Great percentage in favor of us. However, those ANTZ people do not care about that number. It's the 5% chance or less of something bad may happen that they latch on to. We have to address the possibilities to reduce the avenues they can use against us. No matter how narrow it may be it is one less thing for them to scream about and one more thing for us to make them shut up. batteries exploding and mods catching fire, we've seen this on media its a small percentage and part of that <5% but thats the ammo those people want to shed a bad light on a life saving device. We can't simply dismiss the water they are dumping on us no matter how ridiculous it may be.
Take the example you just gave. It is true and are correct, I understand your point. However, the major difference between aerobics and vaping is that during exercise you are not taking in lung fulls of vapor saturated air. No big deal to us and its better that toxic cigarette smoke, right? But they can make that sound bad. So, we vaporize a liquid and inhale it. Like all vaporized liquids it eventually condenses back to its original state. Depending on the PG/VG ratio its viscosity varies and sticks or coats our respiratory tract. Anyone who vapes in a car knows about that haze forming on their windows - same thing. Ever notice the air smells better after rain? Rain and snow have a "seed" particle, a substance they need to coalesce such as dust/air pollution. Now for vapor, this may happen. dust taken in helps vapor condense easier and form a tiny layer over our respiratory lining. Does it affect gas exchange in our lungs? Does the layer accumulate and how fast does it accumulate? Can the body "shrug" it off and get rid of it fast enough? Will it adversely affect the cilia over time? We just can ignore and answer "there is no evidence of this". To a non-vaper this sounds logical and presented in a negative way and omitting certain truths it will sound scary. We know the truth and we know our choice is sound. But ANTZ will scream with the smallest of reasons and when they can't make a logical reason... "What about the children" comes out of their mouths.