Some of the LinkedIn Responses are direct and on-point, and also hilariously/depressingly based depending on how you look at it:
EDIT: In hindsight, I think I should've looked into posting this in a different community.. It's closer to a silly "innovation".. soo.. is this considered FUD? I also don't support smoking or vaping, especially among kids. Original title had "privacy-violating" before the "solution".
You don't vape metals unless you're running it unreasonably long and hot without juice. The studies that showed metals shedding from coils basically engineered it through nonrealistic methods that would never be repeated in the wild, you'd notice the worst taste you've ever had as the cotton singes long before the coil sheds any material. That said, vape juice is VG, PG, Flavors, and Nic; fog machine juice is VG, PG, distilled water, and essential oils if you want some smells. The bulk of both fluids is literally the exact same with the exception that vapes require USP food grade VG/PG where nobody cares with fog machines.
As to your second question: Because it's funny. Of course they'd be mad about it, that's part of why it's funny. Not a class clown, were you?