> From my understanding, many of the flavored juices contain Vitamin E

That is incorrect; specifically the "many" part. Vitamin E Acetate was found is black market(illegal) THC cartridges in the midwest. Vitmain E acetate is used in THC oils to increase potency. Legitimate THC oil producers in legal states do not use Vitmain E Acetate in their oils.

Nicotine juices are a completely different industry.There would be no reason for Nicotine juice producers to use Vitamin E acetate.

I understand why you would be misinformed though, because the articles on the subject have been very reactionary and exaggerated in order to stir up media frenzy and drive views and clicks.