This is the problem I have with biographies in visual medium...most of the time the subject is glorified and their faults hidden. Almost all biographies I have seen suffers from this.
The British monarchy is like an undeserving, glorified organization - hyped for practically doing nothing and using up taxpayers money. No one knows what goes on behind the walls - highly secretive...this has been the issue since Queen Elizabeth's coronation or maybe even before that. So whatever we are being told is just a mirage...God knows what's the truth.