It is sad that you are downvoted (however you may have told it without hints to conspiracies), because there are parallels to what you say about that time's mentality in for example the "Morgenthau Plan" that was fortunately dumped in 1947 and replaced with its opposite the "Marshall plan".
During implementation of the Morgenthau Plan, Germans had to live with 1200 calories per day:
During implementation of the Morgenthau Plan, Germans had to live with 1200 calories per day:
https://en.wikipedia.org/wiki/Food_in_occupied_Germany