FWIW I'm no expert on Germany post-war, but from a personal POV my father was born in 1944 and grew up in post-war Germany (Mainz) and my Opa worked for the city in post-war building reconstruction (knew the story of every building in the centre of the city by heart and when I visited told me everything he knew). So I've some interest in the topic.

As for the rest of your points, plenty of valid observations for the period of the 50s, 60s, 70s but we are talking 1948. The war had barely ended.

It's ridiculous to compare a country recently ravaged by brutal total war which lost 26 million people, millions of which were civilians -- to a country which lost just 400,000, almost all in the armed forces (and, again, was a destination for immigration both before and after).