alt Hacker News> most likely people haven't bothered to check
Searching "cfc concentration in atmosphere" on scholar.google.com returns 60000 papers. Cruising the first few pages, most of them easily qualify as "bothering to check." Your estimation of the scientific community is five orders of magnitude off.
How about you get 1$ from me for every paper you found there that answers my question - and I get 1$ from you for every paper that is not relevant to my question?