There’s never been a single reported case of popcorn lung caused by vaping, and the vape manufactures have basically all chosen to switch to something other than diacetyl out of an abundance of caution. It was only ever in some of the “creamy” and popcorn type flavors anyway.

That said, don’t start vaping. It’s great as harm reduction because it’s better than cigarettes, but unless you’re using it to stop smoking cigarettes, don’t vape.

It is also a cleaner delivery mechanism for THC than combustion.

Yeah, but maybe avoid the black market weed carts. EVALI was caused by black market weed carts using vitamin E acetate (which isn’t going to be in nicotine juice because nicotine plays nicely with vegetable glycerine and propylene glycol, THC doesn’t) - the feds busted the manufacturer shortly after people started getting sick and I haven’t heard about EVALI since then, so presumably nobody else is trying it at the moment, but the lack of widespread reporting about it being from black market weed carts is frankly criminal.

Or avoid carts completely and get a dry herb vape. Then just add your flower, and it heats it to vaporizing temperature without combusting, no added chemicals at all.

Lots of options but I’d recommend an xmax v3 pro as a good starter one, usually under 100 Usd.