Murray, and the AEI he works for, have fought against higher wages for workers and social mobility for decades. I don't take seriously him bemoaning the results of what he has helped do.
To me, this represents the paradox of morality. That in a closed (somewhat in this case) ecosystem the extremes can horseshoe around, which reminds of horseshoe theory in politics as well as this phenomenon of society seemingly rubberbanding when forcefully pushed to one extreme throughout history. I could go on about my pet theory of how it may relate to thermodynamic regulation on Earth's ecosystem, a self-sustaining form of gradient moderation, but it's too unsubstantiated.