This is a thought-provoking re-telling of late Twentieth Century history from a libertarian perspective. So much of the modern welfare state is based on kind of mythic-history poverty-exigency that looking candidly at our current state of affairs (e.g. the biggest health problem facing the poor in America today is obesity) undercuts many left-wing political assumptions and has a liberating feel.
The author sees a quiet libertarian revolution in the second half of the Twentieth Century and this is true enough with things like abortion rights, free speech, and sexual tolerance. But there has been no groundswell for eliminating public education, or changing foreign policy, or scaling back the welfare state, so the author is overstating the success of libertarianism overall. He also resists making the observation that the explosion of prosperity post-progessive reform and post-New Deal tends to support the idea that mixed economy can work very well, even while the liberated proletariat in purely socialist countries got to wait in line for moldy bread.