> American Sniper ... How this disproves that "Hollwood is unable to record a movie depicting modern US millitary in any critical or non-heroic manner"?

It's very critical. While American Sniper does indeed glorify the heroism of individual soldiers, it simultaneously criticizes the entire endevour. Yes, the lead protagonist is depicted as a hero, but he is never confident in his own morality, and even develops a professional kinship with the people that he is ordered to kill. It also highlights the severe physiological damage that war can bring, the movie ending in tragedy.

While American Sniper may glorify the individual warrior, it's largely critical of war itself.