The cynical view of this would be that a large number of online domestic white people have reached the threshold that had been used to add people to the terrorist watchlist, or that there's an anticipation of pressure in this direction. If incel reddit has to be added to the terrorist watchlist, a lot of people from what are considered very nice families would be getting turned down at the gate.
Nothing has changed in the arguments against the watchlist during the period it has been in existence.