This is certainly bad, but in context of the general problem of Pfas this feels strange to focus on.
These chemicals are literally everywhere, non stick pans, pizza boxes, dental floss, contact lenses, rain jackets, cosmetics,…
Almost everything that is water repellent has a high chance of being made with pfas. Those videos with the cool water repellent sprays, not so cool really.
Dont get me wrong this is a serious issue but the article seems suprised to find it in firefighter clothing while i would personally be more suprised that its not in there.
Trough sweat these people may get a higher dose then some others but in the context of all unborn babies already having pfas.. this is (sadly) hardly something to be specifically upset about.

Its also worth remembering that the holocaust was also entirely legal. So was slavery.
Legality and morality are distinct concepts.