Comment by amluto

This phaseout may be entirely useless or actively counterproductive, exactly as one might expect when one phases out specific chemicals as opposed to the entire family. Manufacturers replace it with something fairly similar!

https://en.wikipedia.org/wiki/GenX

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8571496/

Yes, that's another highly fluorinated compound that may well be worse.