I don't know if the song is intended to be anything but a well written song. Is it revisionist history? How so?

D

BYW: All history is open to revision on a minute by minute basis. Someone opens a trunk and finds an old letter and more facts come to light. Events don't change but cause and effect does. Just today I read that the Great Depression would probably have been several years shorter in the US had FDR not meddled in the economy.