At some point, the anecdotal becomes the rule when it occurs frequently enough.
This reminds me of the toxic chemical spills over the years.
The big company always had insiders that knew the risks, but threatened potential whistleblowers into silence.
The big company hired professional public relations and advertising firms to promote “progress through chemistry” and feed press releases for mass media to regurgitate and claim as their own “research”.
The big company hired lobbyists with suitcases full of cash to keep the politicians in line.
Then when people started to get sick, the doctors and nurses had no information to understand the problem since nothing was in the medical journals explaining the problem.
Folks who started raising objections were attacked as “crazy conspiracy theorists” fighting the “progress of science” and “undermining the local economy”.
We have seen it all before...