"The words "I alone can fix it" could have been cribbed from any one of a number of Mussolini speeches from the 1920s."

Exactly!  Like Il Duce, Herr tRump is a raving megalomaniac.  When reality and his his ego aren't on the same page, he always defers to his ego.  As presidential historian David McCullough so accurately describes tRump, "He is unwise, unprepared, unqualified and unhinged."  McCullough went on to ask, "How will history judge us?"  For letting a buffoon like Trump in the Oval Office, history will not be kind.