If the guy himself didn't give a damn about who he was, in terms of practical actions, why should anybody else?
And odd ideas about leadership are part and parcel of many ideologies, including communism. There's nothing about the theories of Marx that would directly support much less require the use of representative democracy in ruling, and indeed most communist systems have managed quite well with dictators in the lead. Also, again, many would be far more comfortable with a dictatorial system than with one that shuns conventional methods of leadership altogether; the Nazis would have been the conventional alternative, and thus potentially the more appealing to most democracies.
I have no idea what your first sentence means. As to the paragraph, I guess we'll have to agree to disagree. The fact that the late 20th century showed Communism to have mass appeal whereas Nazism pretty much disappeared demonstrates which one has the natural advantage to me.