Not to mention waterproof clothing, non-fogging safety goggles, temperature-resistant wire insulation, dielectrics, separators in Li-ion batteries and countless biomedical applications.

Fluoropolymers and fluorosurfactants have unique properties that make them very difficult to substitute. I'm not sufficiently informed to comment on the possible health impacts of fluorinated hydrocarbons, but I can say that a world without them will be poorer in countless small ways. That might well be a price worth paying, but we shouldn't pretend that it's an easy decision.