I don't think that his involvements in WW I are justified by his achievements in chemistry in favor of world population problems. Someone else would have found a way to bind nitrogen without him and so feed billions of people in the end. Much later perhaps, but eventually still. Yet, most of today's populus have barely enough to eat. So, ultimataly the problem remains unsolved, or it shifted even. Haber was not a sol…
https://www.worldhunger.org/2015-world-hunger-and-poverty-fa...
If you believe that "most of today's populus have barely enough to eat" there is a good chance you have a much more dismal view of the world than actually exists.
I'd recommend checking out http://forms.gapminder.org/s3/test-2018