I was listening to this podcast a few days ago. This is one part that made me think. There are movies more realistic than others, but a realistic movie is boring and there are none.
Once I read a German veteran's review of 'The Hurt Locker' which he described as his favourite war movie. I know many veterans don't like it; it portrays American soldiers as reckless, playing loose with the rules and committing war crimes; but that guy wrote something interesting about the flick.
Tonally, he thought, 'The Hurt Locker' got it better than anything else: portraying a soldier's life as oscillating between anxiety and boredom, and war from the individual's perspective as a sequence of events strung together in a seemingly senseless fashion.
He also liked the movie's portrayal of the conflict in the hearts and minds of those who take up an extremely dangerous and unsettling profession not because but despite the fact it is extremely dangerous and unsettling – much like a fire fighter isn't motivated by a desire to see charred corpses but by the thrill and gratification of saving people from that very fate.
At any rate, I personally think audiences are smarter and more eager to try out new concepts than Hollywood gives them credit for. Documentaries like 'Restrepo' or 'Amardillo' had no business gathering a following and interest, yet still they did. Which suggests to me there is an audience for realism.
But even successful instances of realistic filmmaking hardly ever spawn a trend for some reason. Even if it's just elements within a film. For example, why haven't movie shootouts gotten more realistic since 1995's 'Heat'? Every action movie or thriller with a shootout since has been compared to that infamous scene in the streets of L.A. yet still the studios don't seem interested in upping the ante.
Even people who've never held a gun in their life before can now be observed rolling their eyes at the image of a car door providing effective cover from an assault rifle.