Watch Dark Waters, the only reason PFOAs got outted was because the DuPont themselves did the reaseasch that showed if was toxic, then Robert Bilott basically dedicated his life to uncovering their coverup. The company then basically for all intents and purposes renamed PFOA so they cant be sued for selling it anymore. The F is the important part. So basically now someone would need to do a huge amount of research out of their own pocket to prove that PFTE was safe.... "trust me bro" - DuPont probably