OK, well so far this quote:
is basically what I just said, that you're apparently disagreeing with. But OK, let's read on:
This isn't a study, it's a review and summary of a bunch of studies to date. The authors note that vaping isn't safe AND it has potential consequences. Sure, I've said that, and so have you and most of the rest of us. It looks at Juul too, and I can't blame them since Juul represents a large fraction of the youth vaping market. And also notes e-cigs as one of the avenues for quitting smoking, if other approved methods fail.
There's multiple "paths" and "concerns" in that review. Of course, when compared to inhaling clean air for never-smokers, vaping is a problem. But when put in context to smoking cessation and THR, that review doesn't conclude that e-cigs should be ignored nor vilified. It just says they aren't harmless.
If you're pointing out that it's "more than just water vapor" and "it's probably not harmless" I think most if not all of us here will agree with you. We don't like the "it's harmless" narrative either, as it could contribute to youth use.
But here, here's another study to consider:
Health effects in COPD smokers who switch to electronic cigarettes: a retrospective-prospective 3-year follow-up
Since cigarette smoking is a direct cause of COPD, you'll find at least in that regard, that data indicates that EC's are indeed safER. That doesn't mean that they're safe for non-smokers to start using.
The real problem I wish people would be more vocal about (in a very compassionate way, of course) is the problem of dual use. I don't want to type this and make anyone here that is dual-using feel bad, we all have our paths. But the problem with dual use is that although it may reduce or slow things like COPD even if you continue to smoke to some degree when compared to smoking-only, the problem is that you get dual-dangers too. So any additional dangers from EC's are combined with dangers from smoking, and you get the sum of them. Thus I always try to encourage dual users to "make the switch" when they can, and make it a definite goal. Moving from there to nic cessation is a longer-term goal, if they think they can do it. Short of some known associations with psychological disorders (and even in those cases I suppose when meds are working and monitored) smoking cessation should be a #1 goal. Not just reduction, but cessation.

Sorry for rambling.