nothing inherently to do with THC That's a bit of a stretch. These people aren't vaping -- and suffering the negative consequences of it -- simply because it'

nothing inherently to do with THC That's a bit of a stretch. These people aren't vaping -- and suffering the negative consequences of it -- simply because it's "a black market product that has shitty ingredients in it". They're doing it (also) because THC is psychologically addictive. And because it also (when used chronically and excessively) seems to impair judgement and cognitive development. So actually - while it's not just about THC -- the issue is inherently related to THC and its intrinsic properties.