I really wish I had remembered this Postone quote when PD were still around. Perhaps it can still be applied to Platypus. It also makes you wonder what happened to the rest of Postone’s project:
On the basis of what I have developed here, I intend to pursue my project of reconstruction in a future work. In my view, this work demonstrates the plausibility of my reinterpretation of Marx’s critique of political economy and of the critique of traditional Marxism associated with it. It indicates the theoretical power of the Marxian theory and its possible relevance to the reconstruction of a critical theory of modern society. Nevertheless, the approach must be more fully developed before the question of its viability as a critical theory of contemporary society can be addressed adequately.