They'll only stop if the political price for using it becomes too great. It seems that what "validates" the argument is the history and degree of acceptance of the perspective by the public, which is almost a given considering the role the media plays in propagandizing the commonly held view. Unfortunately, after several decades of seeing progressives ignore the media-propped anti-fiscality/anti-government/anti-welfare discourse of neoliberals I have come to believe that it is better to disconstuct their framing as it occurs to point out the glaring inconsitensies. Once their discourse has taken hold of a large fraction of the public, such as appears to be the case in France right now, we are better off attempting to demonize their disocurse to make them weary of using it. That's my take on it :)