just to argue against myself:
from inhance's website:
When Inhance first became aware of the potential for fluorination to unintentionally form miniscule quantities of certain PFAS impurities, the Company researched and developed treatment modifications to reduce these impurities in most instances to undetectable levels in the plastic packaging articles it fluorinates. Overall, Inhance’s treatment modifications have reduced unintentional formation of these impurities by more than 90%.
To the extent any PFAS remains present, independent testing has verified that in treating 25 million pounds of plastic packaging articles annually, Inhance’s fluorination process forms less than 15 grams – equivalent to the weight of a few grapes – of PFAS impurities. That amount represents less than 0.00000002% of the approximately 85,000 tons of PFAS generated domestically by other industries every year. Nonetheless, Inhance continues to conduct research and identify additional treatment modifications to further reduce and eliminate PFAS impurities from the fluorination process.
obviously they have a lot of bias and financial interest in this topic but it would be interesting to learn what the real deal is