What was "crazy" about the US making very concrete preparations like this one for the threat of the Red Army pouring through the Fulda Gap into western Europe?

What was "crazy" about the US making very concrete preparations like this one for the threat of the Red Army pouring through the Fulda Gap into western Europe? (e.g. https://en.wikipedia.org/wiki/Davy_Crockett_(nuclear_device)#Development https://en.wikipedia.org/wiki/Davy_Crockett_(nuclear_device)...) Now, Stalin and Khrushchev, you could well say they're crazy (the latter's peers judged him so after the Cuban Missile Crisis), but one thing seared into the minds of the Westerners fighting the Cold War in this period was the price of ignoring people like them (https://en.wikipedia.org/wiki/World_War_II https://en.wikipedia.org/wiki/World_War_II).