After the war, more than a few Nazis used the same argument you are using now. More to the point, in spite of Christaller’s alleged ambivalence on Nazis and Jews, he is still at the heart of the holocaust. More than likely he would have known about the ghettoes, concentration camps and death camps, and perhaps even assigned other planners to be in charge of where they were to go, etc. As a kid, he used to draw up maps on his own and fill in the empty space with his own utopian ideals on how the world should look.
Like it or not, you have to admit the Nazi’s were a large part of the reason we made it to the Moon. It’s sad that von Braun just “went along to get along” in Nazi Germany but the man went on to do some fantastic things for humanity and science.
My only point is that his ideas about geography and settlement patterns that support a major town and district have nothing to do with the Holocaust. I doubt the Israelis would have approached settling this district differently had they known about his service with the Nazi government.
Yes, you make an often overlooked point. He was planning communities to be settled by German pioneers on the land of Poles when able. The Jewish poles to be killed, the Christian Poles enslaved. Of course he knew, everything. Many, many Germans are guilty of ambivalence, which is at the heart of it.