Perhaps post-modernism is on the wane, that seems a bit difficult to ascertain right now. I would not doubt it, but until a clear successor emerges, it is too nebulous to really proclaim a new dominant school of thought. Also, post-modernism has really had a rather short-reign as dominant philosophies go. I'd be surprised to see it pass so quickly.
I don't really see the Green Revolution as a "Great Narrative" as much as a reaction to surface events. For example, no one created a systematic philosophy in the same manner as Kant, Hegel, or Marx did in their works. Can you see the difference? This is not a value judgment, I'm not arguing one is a better form over another, but there is no overarching systematic philosophy, painstakingly and methodically derived in the Green Revolution (or any other postmodern event).
Actually, I think that the shift from a hierarchical social order to a more decentralized social order is probably for the best. Please keep in mind that while I believe postmodernism has tendencies that lead to destructive behavior when intertwined with capitalism, that does not mean there are not positives aspects of both.
Individualism does not equate directly to rebellion. In fact, coupled with capitalism, even rebellion in postmodern times is nothing more than making specific consumer purchases (i.e. wearing the right shirt and getting the right haircut or tattoo). The problem, of course, comes from the notion of fulfillment in consumerism and the pursuit of individual selfishness, even at the expense of others. We then have the situation of an individual who accumulates massive capital while others cannot meet basic needs. A cynical postmodern attitude (Lady Thatcher summed this attitude well) is to simply say, "fuck society, I earned my accumulated capital."
You keep bringing up "critics of postmodernism" and then reference me. I suppose I am somewhat a critic, but also a fan. As I said earlier, it has both pros and cons (as most man-made systems do). If people who are critical of postmodernism are cynical then you'll have to excuse them, as they only know a postmodern method of critique.
And again, is cynicism bad? Yes and no. It is good in that it prevents tyranny and the simple acceptance of people like Stalin. It is bad because sometimes we, as humans, tend to throw the baby out with the bathwater, so to speak. We were burned (collectively) by the nastiness of World War II and the Cold War. Perhaps we are overcautious now to the point that we are completely resistant to anything but incremental change.
I respect your difference in views. I see it much as the bourgeoisie must have seen it when it looked as though feudalism was showing serious weak spots, but still holding together - like a dam struggling to hold back a reservoir. I sincerely don't believe that the masses of workers on the Earth can tolerate the existence eeked out to them for much longer. Consider that 80% of the proletariat lives outside of Europe and the United States in 2010.