My wife used to smoke
she switched to vapes when they were quite new
She still vapes.
She is the type that refuses to believ things until she has seen proper evidence and she has the background to know what "proper evidence" means
What she has found says that vaping - if from decent companies, which is critical, does have cancer risks
BUT the risks are much much lower than for smoking
Of course - if you puff on the vape a llot then that increases the risk
but the main risks are from dodgy vapes that could have basically anything in them
she has also dropped down the nicotine content - she recently used a lack of her normal in her normal strength as an excuse to drop down to the lower level
but it is still not a "low level"
based on her research - which I trust because she is a fussy bugger when it comes to evidence - then it is better than smoking
but still a risk
so if the alternative is smoking then it a better option
if you have never smoked the vaping is almost as dumb as starting smoking was in our day
which failed to stop a lot of people doing it