Answer: According to the author of this text, Hitler's ability to communicate with the public led to his political success.
An excerpt from the question, "As a speaker, Hitler exercises astonishing sway over a German audience, presumably because public speaking is an unknown art in Germany. His speeches are practically repetitions of a few simple main theses, in the course of which platitudes are uttered with such extraordinary emphasis that an unsophisticated audience mistakes them for newly minted aphorisms" explains that Hitler was an effective communicator making the most ordinary words seem extraordinary with his charisma.
I'm pretty sure that this is true... Don't be mad if I'm wrong though please.