Someone using a cannabis flower vaporizer (e.g. PAX 2/3, Firefly, Arizer, Volcano) with pure lab tested flower was never at risk for the lung disease that vitamin E acetate has caused.
The linked article doesn't mention vitamin E acetate, so here's one that discusses it:
https://www.theverge.com/2019/12/20/21031771/vaping-lung-inj...