You're conflating different chemicals together.
Paraquat (what this article is about), isn't used by any people in the links you gave (golf courses, Dutch or Swiss farmers).
parkinsons might have multiple causes.
https://www.wired.com/story/scientists-thought-parkinsons-wa...
Each of which must be studied, and legislated, on its own.
E.g.:
Proximity to golf courses where pesticides are used -> Parkinson: https://www.hackerneue.com/item?id=43933580
Farmers using pesticides have 60% higher Parkinson risk (2019): https://nos.nl/artikel/2302396-landbouwgif-kan-kans-op-parki... (Dutch)
Parkinson should be labeled as profession-linked disease for farmers(Swiss): https://www.srf.ch/news/schweiz/pestizide-als-krankmacher-pa...