That’s not how it went, though. It’s, in fact, the opposite of how it went. Hitler had relatively little popular support, but full support of the industrial elite. It’s blaming the people for the crimes of the elite. “They abdicated their franchise” no, fuckface, half of them voted communist. “We ignored Hitler” no, fuckface, you put him in power because you thought he’d be malleable.
I’m not surprised Heinlein bought it, though. And I’m not surprised people here are buying it.