I think you misread: GP claimed that PTFE is a type of PFAS, and separately: PFOA is also a type of PFAS. And if PFAS is the problem, it wouldn't be useful to b

I think you misread: GP claimed that PTFE is a type of PFAS, and separately: PFOA is also a type of PFAS. And if PFAS is the problem, it wouldn't be useful to ban specific classes like PFOA if they are just replaced by different classes of PFAS. I'm not sure about the last claim: it isn't clear that all PFAS are equally bad, so replacing PFOA with a different PFAS might be worthwhile. It seems hard to study, but with Europe banning PFOA, perhaps we'll get some more insight.