PTFE is a PFAS, as is PFOA.

> Now, since PFOA belongs to a large group of chemicals called PFAS, consisting of 4,700 similar substances, it might be tempting to just switch to one of the other PFAS chemicals that hasn’t been restricted yet. But that wouldn´t solve the problem, it would only postpone and perpetuate it. [1]

[1] https://marketplace.chemsec.org/articles/news/2020/04/01/the...

I.e. there's a whole zoo of similar compounds, and all those type specific safety claims are all at room temperature. The whole point of their use is often on heated surfaces, getting near and over the safety limit.