That's true, and I was unpleased with my word choice for 'madman', it made the issue too simplistic.
after which yes, it was all him.
Well, I wouldn't say it was all him; he had an army and a government and millions of people 'just doing their jobs' - not to mention the collaborationists and the governments in occupied countries and the overzealous police and the rampant antisemitism (just as an example)... Like you said, the wrong things helped.