This paper is specifically about topical application of these compounds. The last paper you read saying it was worse that cigarette smoke sounds like it was about inhalation of burning leaves.
Calling the the authors of the paper liars is a very strong claim that you haven't shown any evidence for.
I too am calling bullshit, although for different reasons. Take a look at Figure 3A. Is there really that big of a difference between THC and CBD treated vs. not treated images? To me, a seeing person with eyes, no.
They didn't claim that there was a statistical difference in 3A. It's with senescent cells at the 48 hour time-point when combined with hydrogen peroxide, that they saw the biggest difference. (3C, on the right)
Calling the the authors of the paper liars is a very strong claim that you haven't shown any evidence for.