Hitler was such an anomalous character - he was so over-the-top chaotic in his approach to statesmanship, his manner and in the violence which overwhelmed the country initially. I think diplomats around the world... felt like something like that simply would not be tolerated by the people of Germany
It was always inevitable that if you get serious trouble in any family then everybody's inclined to look at the head of that family and see if they see any cause or reason to associate it with the head of the, head of the family, why it should be.