Morris was probably just caught up in the moment at the Oscars, and perhaps a bit nervous. The documentary is actually very much a "fair and balanced" overview of McNamera and the history he was involved in. Morris doesn't set out to cast McNamera as the villain, he's just trying to get some answers. My preconception before seeing this film was that McNamera was the "mastermind" behind the Vietnam War; the interviews and the audio recordings seem to suggest that he was simply carrying out the orders of the President. There's a tape of his conversation with Kennedy in Oct. 1963 where they both agree the U.S. needed to soon find an exit strategy in Vietnam...

<or for his bravery for coming out and speaking about his mistakes,>

McNamera does admit that mistakes were made, but he never formally apologizes for anything. Not even for the firebombing of Japanese cities in WWII that killed over a million people.