As someone who lived in a place that's still dealing with pfoa contamination, your characterization of "anti-progress doomsayers" feels insensitive. If you tell people that they and their kids have toxic chemicals in their blood at 100x the normal concentration they're going to be concerned. Writing them off as outliers is dismissive and misses the point; it doesn't matter if things are safe in small doses if companies can't be trusted to avoid exposing people to unsafe doses.
From a 2016 study in Vermont:
> More than 400 wells tested positive for PFOA. More than 300 wells had concentrations at levels greater than the state’s PFOA/PFOS drinking water standard of 20 parts per trillion (ppt). The maximum level of PFOA detected in a private drinking water well was 4,600 ppt.
https://dec.vermont.gov/sites/dec/files/documents/PFAS%20Sam...