The first line of your reply is wrong, non stick pans are not perfectly safe. If we completely ignore the manufacturing waste, cooking in the pan at high temperatures, e.g. frying, breaks down and degrades the Teflon coating into a combination of hydrofluoric acid and short chain PFAS. This reaction seems to start to become noticeable at about 220C, which is practically guaranteed to be occurring an the intersection of metal and Teflon even at lower surface temperatures of 180-200C due to the extremely poor conductivity of Teflon.

Wait till you find out about the PFAS in the non stick pans