You absolutely can chose to not add any if those chemicals into your life. Of course you can't control the rain, though you can control your food to a great extent.
If people care enough to decide not to use products that contain PFAS, the environmental exposures would disappear pretty quickly. More importantly, if its even possible for governments to effectively coordinate a cleanup process that job would be much easier if consumers pitched in by first using their individual power to drastically reduce the contaminants being added into the system.
> I'd say lets have a vote. Do you want to risk autism, cancer, infertility and whatnot for nonstick pans and all the other wonders of PFAS? If the majority doesn't, it will get a global ban.
That doesn't require a vote at all. Bans are only useful when we have to leverage the power of the state to force people to do something they don't want to do. If consumers agree that nonstick pans have all those risks and they aren't worth it, they stop buying nonstick pans and companies stop making them.
Even if we wanted the ban route, who enforces it? The UN? Some new global government? Or a unanimous agreement by every government in the world, including those who's economies are partly supported by producing the nonstick pans?