Florinert can be formulated for either one-phase or two depending on boiling point. Mineral oil is only suitable for single-phase because you cannot deep fry your CPU (it boils at 200C)

Feels analogous to looking for cold fusion because of the downsides of fission.

I didn't get a significant sense of loss from this article though. Especially given the downsides of PFAS.

3M and DuPont knew since the 1970s and suppressed the information, not dissimilar to how tobacco and oil industries created disinformation about externalities.

They are plenty reactive in a sense of interacting with enzymes and other cellular machinery.

Edit: Nevermind, Wikipedia makes it pretty clear that even the non-broken-down PFAS are totally unsafe, evil things which we knew were dangerous since the 70s and did nothing about until recently

For example PTFE is a large molecule with strong bonds, and as a consequence isn't very reactive and likely safe.

On the other hand, perfluoroalkyls such as PFOA have the same shape as fatty acids, so they bind to the same places such as in the liver, which makes them grave health hazards.

Many precursors used for making PFAS are also toxic, so for example, even if PTFE is safe, manufacturing it isn't.

My understanding is that the bigger danger is e.g. a Teflon-producing plant than the final Teflon products (assuming the Teflon isn't damaged and heated too much). Because the plant has to handle the reactive ingredients, and those can leak into the environment.

Then of course we produced it at industrial scale for decades flooding the entire planet with this stuff.