That's their plan. 90% of human population dies off. (The remainder live in caves, animal skins, and have a life expectancy of 35 years max. That's their idea of Paradise.)
Money is just a medium of exchange and has no intrinsic value. It is meaningless to say that the world is bankrupt because sovereign nations can create all the money they want. That is not the problem. The real problem is that there is no agreement on what real-world productive steps humans can take to change what are essentially cosmic events. If there were a consensus on what needed to be done, there would be a path to progress, but such a consensus does not exist. Any money spent in such an environment will be wasted, contributing to unproductive inflations.