Not to worry. All the fluoride they're intentionally doping the water supply with just fluoridates your insides to give you a forever body. Just kidding. It goes from the stomach into the bloodstream and straight up into your teeth to fortify them and give you forever teeth.

Yeah the difference being that PFOA is a carbon chain, whereas fluor in trace amounts can improve dental health.

So they're still wrong, fluoride is added to water in very small amounts, but PFOA/PFOS are other unrelated chemical byproducts. They only share the fluoride element.