>Chevron, which never manufactured paraquat and hasn’t sold it since 1986 ... should not be liable

I think Chevron may have a point, no one knew back then and they stopped selling it ~40 years ago. But ---

To me, if the US had a real Health Care System, people would not have to file lawsuits to get the care they need.

But in the US, this is how things work. The care these people need is unaffordable by everyone in the US except for the very rich. So they will be waiting probably 10 to 20 years for relief as the lawsuit works it way through the courts and appeals.