> Also, I don't think the stigma would just disappear for stuff like heroin.

Hopefully there's still strong sigma for life destroying drugs like heroin, meth, etc. But as for the others it's already disappearing for marijuana, and I could easily see it disappearing for LSD, mushrooms, cocaine, etc.

Well my point was that they were originally intended to reduce nicotine addiction, but they are actually increasing nicotine addiction due to being perceived as safe alternative to cigarettes by teens. I suspect that legalizing drugs such that they are "cleaner and dosing more predictable" (aka "more safe") would inevitably cause an increase in usage and therefore addiction.

No. When you read the patents you'll realize that Jull vapes were designed mimic the psychopharmacology of cigarettes, which everyone knows are pretty damn addictive. Regular vapes have a different chemistry. You hope that Juul gets sued out of existence and that the FDA rouses itself to action.