I don't recall anyone on
ECF ever saying that vaping is 100% safe, since literally NOTHING in the universe meets that standard,
That's right - no one says that - the problem is people who use that fact, to make everything "dangerous". Because no product is 100% safe - mainly because idiots find ways to harm themselves, then some think that even 1% unsafe = a cause for regulation.
And because no product is 100% safe, individuals have to weigh the risk/reward - the possibility of particles from dry hits vs. the benefits of nicotine. The need for taste in eliquids to stay away from cigarettes vs. the possibility, even though no evidence in either cigarettes or eliquid suggests it, that diacetyl may cause harm. The enjoyment of big clouds vs. the enjoyment of flavor. The need of nicotine via ecigs vs. the harm caused to conditions - asthma, COPD by continuing to smoke. There are many other personal reasons too long to list.
This 'risk/reward' assessment for ecigs, fortunately has no effect on someone else's rights, so it is a personal choice only. Those who don't like diacetyl, big clouds, don't have asthma - can choose according to their preferences without interfering with any others. Only when you have people who know what's best for others and want to push or support gov't regulation, are choices then diminished - at least with ecigs. If it's a product that can affect other people - that's a different story.
When it's not the case that it affects others - as with ecigs - then those who still want to push toward regulation and intervene in others' personal choices - then they have to make that 1 or 2% risk so dangerous, either by using the children card, or using junk science, or some other form of fear-mongering in order to pursue their fake altruistic goals that make
them feel good and almost no one else.