I was alive and well then. Never heard the word "dictator" ascribed to Roosevelt by anybody. I question that finding.
I'm not defending the man. He laid the groundwork for the "pump priming" that has escalated into the present nightmarish national deficit and debt. But dictator? Nah.
I wasn’t around then, I am only 65 but my Grandfather and father who were, referred to him as the first Dictator of the United States and hated his guts.