I agree.
I'd also say that I really can't get into the specific criticism against military forces in a superhero book mostly for one reason: almost every major DC superhero is somehow related to a military background (and EVERY Marvel hero is, especially in their most internationally beloved incarnation, that is the Avengers movies). Superman has waved the American flag more than every other superhero for God's sake. Sometimes it goes wrong (Superman 27-28 by Tomasi could be one of the most horrifyingly grandiloquent Superman stories I've ever read) and sometimes they get it right. Miller got it right IMHO. It's not about the American country, or even the army as a patriotic institution. It's mostly about the experience, the self-discovery or even the purely physical experience as far as I can see. I was not born in the US and I am a convinced pacifist, but I am not blind to the human experience Miller is trying to tell. I see his point. This is basically a James Cameron Superman.