“I agree with you that the Hitler reference is over the top, not because it is inherently so but because it is out of bounds by convention.”
So what you seem to be saying is that Trump = Hitler, but you think that the author shouldn’t have said it because it hurts the argument that Trump = Hitler?
rather than Hitler, there was another charismatic WW II leader Winston Churchill. He also had a very comforting emotional appeal that attracted the people as he led them through dangerous times
See # 38