Postmodernism is a philosophy that refutes the notion of objective reality. It refutes the Enlightenment notion that Man advances his situation mainly though reason. Enlightenment philosophies are the basis of modern Western democracies in general, and of the United States in particular. Enlightenment thinking stands in the way of establishing a collectivist Utopia, and so must be supplanted in the body-politic by the post-modern viewpoint. Postmodernism can be said then, to be the philosophic means to that collectivist end.
So, why are so many made to suffer for so little benefit to them? There are many reasons for sure-- foolish belief in Utopian schemes, lust for power, and greed on the part of the global elites. These people who occupy the top rungs of industry, academia, and politics are insulated from the effects of their questionable economic and environmental theories. They are not affected by inflation. They themselves will feel neither cold, heat, nor hunger in any amount that might make them uncomfortable. They are, in short, not us.
People are going hungry in Sri Lanka. Farmers in the Netherlands will be driven out of business. Europeans will freeze and Americans will sweat. Because their governments have decided to chase good ESG scores, instead of following best farming practices, people will go hungry and perhaps even starve this winter.