Interesting that the essay fails to mention his support of Mussolini or that he considered Judaism to be an disintegrating element and that Jews are guilty of "money thinking".
I do not consider that disqualifying by itself. Plato and Socrates viewed democracy critically, too. I do agree, howeve, that the author paints an awfully one-sided picture of Spengler.
Yeah he never pretended otherwise. I'm not sure what your point is here - that there shouldn't be any antidemocratic thinkers? There should only exist people who like democracy?