It's a doomscroller-brained comment, confusing the PFAS fire retardant foams used on military bases with this ammonium phosphate made from mined Phosphorite rock.
AFFF is used in far more than just military bases. Outside of the USA, AFFF extinguishers, small vehicle/building hazard suppression systems, etc. are much more common.
But yes Phos-check isn’t that