The only sentence in the article (that I could find) referencing synthetic nicotine didn't state (or in my mind imply) that NRT products contain nicotine, but rather it suggestively stated.
"The spectrum of research could be cast wide to include even the health risks between natural nicotine versus synthetic nicotine, ....."
Although no NRT or tobacco products now use synthetic nicotine, this may be feasable in the future, and as such, could be studied in the future.
It was the sentence in the article right before that one that I found perplexing (and inaccurate) because it stated.
"It is amazing yet true, that it is not possible in human health history to know the relative risks of one tobacco product or nicotine delivery product over another in any reliable way - - including both tobacco and pharmaceutical nicotine products."
Lots of existing scientific and empirical evidence consistently indicate that daily cigarette smoking poses at least 100 times greater mortality risks than smokefree tobacco/nicotine products marketed in the US and Sweden (including NRT, e-cigarettes, dissolvables, snus and other smokeless tobacco products).
On a continuum of harm from 1 to 100 where NRT is 1 and cigarettes are 100, all smokefree tobacco/nicotine products marketed in the US and Sweden appear to be below 2.
While it would be nice to know if e-cigarettes are less hazardous than dissolvables, snus, Skoal and/or Copenhagen (or vice versa), we already know that all of these products are exponentially less hazardous than cigarettes, which is enough for the FDA to truthfully inform the public about these vastly different risks and to allow smokefree tobacco products to truthfully claim they are less hazardous than cigarettes.
And this information is clearly adequate to justify the repeal of nationwide bans on sales of e-cigarettes, snus and other smokefree tobacco products.