I found this old paper online last night:
https://www.aarst.org/proceedings/1990/1990_09_Startling_Radon_Risk_Comparisons.pdf
The point of it was to compare the dangers of radon gas to other dangers in a way that would get people's attention so they would radon-proof their homes. As it says, people are scared of nuclear power plants, but apathetic about radon. The author is not sure why, but wanted to put some ideas out about how to make people more frightened of radon, simply because the evidence is that it kills thousands a year.
I think what's going on is that conspiracy theorists thrive on denial of the conspiracy by "authorities" and they lose interest when the announcement of danger is forthright and insistent. The thrill, for them, is in uncovering secrets someone is trying hard to hide. They don't get worked up about the dangers of radon because no one is trying to hide them, but the whole cell phone denial of danger has that sweet smell of "cover-up" that is so alluring.