Very interesting post. I had problems with the film and understand your reservations (I don't rate Kirsten Dunst as much of an actress, for example). But I think if the movie had a message, it might have been to to do with the manner in which the media and the camera in particular turn us into passive voyeurs.
So it didn't make me think of
Apocalypse Now (
Civil War lacks a Kurtz) and the Dennis Hopper character so much as the photographer in Antonioni's
Blow Up.
Would be interested to know what real life war correspondents/photo journalists made of it.
The one I know best is the veteran Middle East correspondent Robert Fisk, who is no longer with us. He was an avowed pacifist who claimed that we all would be if the TV channels showed what he had seen up close and personal.
Here's an example of his writing from his book
Pity The Nation about the Lebanese Civil War. It describes the immediate aftermath of the Sabra & Shatila Massacre. Be warned - it's very graphic.
Reading it didn't make me pro-Palestinian. But it did make me realize that the IDF reside in exactly the same moral sewer as the PLO, Hamas, Islamic Jihad et al.
Those scenes with Jesse Plemons, by the way. It's worth seeing just for those.