If these monoliths work as well practically as they do here in a small-scale test, then we might actually have a chance at minimising the damage done by unregulated release of PFAS, which would be good for all of us.
Having said that, I do fear that the rise of these "fix it in post" environmental solutions will be used by big bads to justify the continuation of bad environmental practices because "ThE sCiEnTiStS wIlL jUsT cLeAn It Up AfTeR"