That last article says, "
The Centers for Disease Control and Prevention (CDC) suspects that exposure to THC, as well as a mix of THC, nicotine and vitamin E, an additive in many vape carriages, is causing serious lung injury."
Would you agree that exposure to THC, in itself, causes serious lung injury?
(Yes, I know, vitamin E acetate (an oil) in cannabis vaping products was likely the cause of a number of cases of lung injury.)
Also, "An FDA analysis of e-cigarettes from two leading brands found that the samples contained carcinogens and other hazardous chemicals, including diethylene glycol, which is found in antifreeze." Diethylene glycol is also used as "a humectant for tobacco, cork, printing ink, and glue. It is also a component in brake fluid, lubricants, wallpaper strippers, artificial fog and haze solutions, and heating/cooking fuel" as well as an industrial solvent. This statement is largely meaningless unless you know how much is in there: "The U.S. Code of Federal Regulations allows no more than 0.2% of diethylene glycol in polyethylene glycol when the latter is used as a food additive. The Australian government does not allow DEG as a food additive; it is only allowed at less than 0.25% w/w of DEG as an impurity of polyethylene glycol (PEG) even in toothpaste." (Wikipedia)