PFAS technology was top secret WW2 research output. Then the military discovered that they had amazing properties to fight extremely dangerous fires in missile warehouses and were eventually required to use them to maximize safety decades ago.

Prozac, Lipitor, Flonase and about 30% of upcoming new pharmaceutical drugs are PFAS, so they aren't going away completely, because society has determined that they are valuable even if they can reach toxic levels if not disposed of properly (every chemical is toxic after a certain human concentration, including water).

Companies wouldn't be able to manufacture semiconductors without PFAS as well, or high temperature components for warfare.

Now that we are smarter, we know how to mitigate risk and reduce concentrating materials to keep below relevant ppb thresholds.

If America isn't educationally sophisticated enough to handle this manufacturing and risk, it will just be done in zero regulation geographies like China and the world will be worse off.