Good god, I was hoping to at least see a decent source of information linked - but VICE? Just stop reading that ridiculous publication. Their fringe coverage used to be decent but now they are just a joke. I recommend reading the actual study abstract instead of that editorialized piece of garbage; and you'll find that this is just another example of yellow journalism on VICE's part.
To quote the study abstract (emphasis mine):
The epithelial cells were exposed to both a low and high concentration of nicotine in the ECIG vapor- or TCIG smoke-conditioned media. The lower nicotine concentration was selected to mimic the average plasma nicotine levels in ENDS users and did not demonstrate toxic or anti-proliferative effects on the cells.
It goes on to explain that a "higher concentration", which is never elaborated upon except to say that it is to represent the anticipated nicotine delivery profile of a cigarette smoker - can cause some malignant transformation when cells are exposed to it for
ten days straight.
Even the NATURE article that VICE cites does not support their claims, they write clearly near the end of the article:
The work is at a very early stage and therefore cannot establish that e-cigarettes can cause cancerin vitro, let alone in vivo.
Considering that the cells they used were cultures generated from bronchial tissues that had already exhibited cancerous mutations, anyone trying to use this study to support an absolute assertion one way or the other is full of shit.
The only thing I agree with that writer on is that there is a real need for more research on this topic. Too bad all the researchers are hesitant to release their findings now because they know all these so called journalists are going to twist their work any way they please.