"While" is an interesting word. It is similar to the word "but", in that it implies that while something is true, the results of that thing may not be as expected. As such, it is tremendously suspicious to include a quote from an article with the word "while", however not include the full sentence.
Now, that sentence fragment you quoted is from an article titled:
Cannabis and tobacco smoke are not equally carcinogenic
Interesting. That almost sounds like this article is saying exactly what I was arguing, but lets dig a little deeper:
"While cannabis smoke has been implicated in respiratory dysfunction, including the conversion of respiratory cells to what appears to be a pre-cancerous state [5], it has not been causally linked with tobacco related cancers [6] such as lung, colon or rectal cancers. Recently, Hashibe et al [7] carried out an epidemiological analysis of marijuana smoking and cancer. A connection between marijuana smoking and lung or colorectal cancer was not observed. These conclusions are reinforced by the recent work of Tashkin and coworkers [8] who were unable to demonstrate a cannabis smoke and lung cancer link, despite clearly demonstrating cannabis smoke-induced cellular damage."
Huh, the quote you selected is stating that Marijuana smoke has not been causally linked to cancer, and the paragraph goes on to cite several sources for that claim. Interesting that you would cut out the second half of that sentence.
The article goes on to provide an explanation for this difference (these are just two passages of many):
"Furthermore, compounds found in cannabis have been shown to kill numerous cancer types including: lung cancer [9], breast and prostate [10], leukemia and lymphoma [11], glioma [12], skin cancer [13], and pheochromocytoma [14]."
"Recent work by Roth et al. demonstrates that THC treatment of murine hepatoma cells caused a dose dependent increase in CYP1A1 gene transcription, while at the same time directly inhibiting the enzymatic activity of the gene product [23]. Thus, despite potentially higher levels of polycyclic aromatic hydrocarbons found in cannabis smoke compared to tobacco smoke (dependent on what part of the plant is smoked), the THC present in cannabis smoke should exert a protective effect against pro-carcinogens that require activation. "
Basically, this article is stating that while Cannabis smoke does contain some dangerous compounds, it also contains many compounds which work against these dangerous compounds, which results in very different outcomes in relation to cancer.
As for the fact that other smokes like bushfires may be carcinogenic, I don't doubt that, but not all smokes are the same.
Now, lets quickly run through your other citations in relation to cannabis:
https://adai.uw.edu/marijuana/factsheets/respiratoryeffects.htm
"The association between smoking marijuana and lung cancer remains unclear. "
"several well-designed and large-scale studies, including one in Washington State (Rosenblatt et al, 2004), have failed to find any increased risk of lung or upper airway cancer in people who have smoked marijuana (Mehra et al, 2006; Tashkin, 2013), and studies assessing the association between marijuana use and cancer risk have many limitations, including concomitant tobacco use and the relatively small number of long-term heavy users – particularly older users. "
https://www.lung.org/quit-smoking/smoking-facts/health-effects/marijuana-and-lung-health
-Doesn't contain a single mention of "cancer"-
Your citations have done the opposite of proving your point, sir.