Niel Armstrong - body language

I recently watched "Something funny happened on the way to the moon" again - and thought I'd read up some stuff on the web. I actually buy most of the stuff about why there are cross hairs overlaid on images, the flag waving, the reflective moon surface illuminating the astronauts etc etc. Things that make me think though - are thus - why did they have to fake ANY of the footage (when they darken the capsule) but most importanly - was Niel Armstrong's reaction when asked about the stars (his body language - the way he dismisses the question, non verbally - and how the astronaut to his left quips "I don't remember seeing stars". It's plain to see - something there is a little off. Hardly conclusive proof I know - but it certainly just gets me thinking. I'm surprised I've not seen this mentioned before?

Thanks