I'm not saying you have to believe it, just that rhetorically asking if it's more than 5,000 in the US is redundant when the article already says there are more than that many individual cases about it in a single district court.

I drastically underestimated the number of farmers, who skew older. This is very unlikely to be anything.

Is that just stating a hunch or do you have new data outside the 2 narratives presented in the article driving that?

My grandfather was a crop duster pilot in the 60s-70s. He died of Parkinson's almost 4 years ago today. He is the only one in my family to succumb to this disease. For a brief moment I was relieved to know there was some explanation for his suffering.

Then I read the HN comments. It is beyond infuriating to read a well researched paper with 1300 open cases legal with overwhelming evidence only to be met with "zero chance this is real."

I don't think you would know a well researched paper if it bit you. Legal cases are only evidence that there is money to be made in litigation.