Sounds like paranoid scare-mongering ? His last round of 'predictions' would have too. But its not that tough to imagine, given the collective state of denial our species has adopted! Be it water, or energy, we refuse to challenge and relook at "life as we know it" and every little battle between convenience and effort towards making a change is lost to the former.
While its probably true that the tipping point might have been reached a while ago, but hey, we gotta try something. At the least, it'll help us adapt more to living a different life - where a lot we take for granted will not be available - easy water, boundless fuel, flights over Europe. We are already paying for the mass produced excessive lifestyle invented and marketed by the last couple of generations, and our kids and theirs will pay the most for it.
Enjoy it while you can, to whatever extent you can. Or learn to grow some food, water, and live with erratic weather real quick.