Meh, I've heard a bit about this one so I'll be skipping it. Basically it's being called a liberal indoctrination piece the same way "American Sniper" was being called the opposite by many people.
The way I see it is this, war sucks, that's the bottom line, that's why we avoid it. There is no way to make it so war does not suck. At the end of the day the only way for a war to truly end is for one side to achieve it's objectives and render the opposing side incapable of further resistance. In many cases this involves needing to break a people and their ideology. It runs contrary to liberal ethics but at the end of the day a military is simply an expression of the will of it's people, as long as the people remain unbowed they will continue to produce soldiers of one sort or another. When they cannot represent with actual armies, they do so with insurgents and gueriella warfare. As long as the basic ideas and way of life continue to exist unchecked it creates an endless state of warfare, and ensures nothing will ever truly be resolved. The idea of a "moral" or "antiseptic" war where only the militaries and actual fighters get hurt is ridiculous because by definition you cannot win a war that way.
Drones and other forms of high technology are intended to reduce the cost of war to ones own people. Basically to kill the other guy without losing your own people. Used properly they can also be used to break a people with less bloodshed because to be blunt an enemy you can potentially fight against is a lot less scary than one that will just kill you, your family, and everyone you know without you likely ever seeing what's coming or getting a chance to hide or resist. Indeed one of the big problems we got into so much crap is that the USA's engagement doctrine was one where if anyone messed with us we'd eradicate the entire culture of whomever was responsible with extreme predjudice. This is why we downsized the military and said we didn't need that many soldiers. The idea was that with our technology if something like 9/11 happened we'd simply light the entire Middle East on fire using non-WMD means like Daisy Cutters, Fuel Air Bombs, Neutron Bombs, etc... and pretty much kill hundreds of millions of people without them having any chance to resist. Given that power the idea was nobody would dare mess with us, and we didn't need to put boots on the ground. A lot of our problem right now is liberal moralists did not have the stomach for a proper war (read a slaughter) and thus sent in our reserves, tried to rebuild our conventional military, and then sent in people to try and "win the peace" rifle to rifle while foregoing our entire technological advantage. A lot of our debt caused by the current war pretty much comes from our lack of balls. The same applies to incursions on the US sphere of influence in recent years because our rivals were not concerned by Americans with rifles, but by our massive technological edge. Once we showed we would not use all of our technology and weapons even after having The Pentagon hit, people stopped fearing that technology.
Drones in particular were intended as a middle ground, the idea being that by sending in heavily armed remote units we could annihilate enemies with minimal risk, terrorize them by not giving them an enemy to fight, and of course cause less collateral damage than say having a few dozen bombers fly over and drop fuel air bombs on Baghdad and then daisy cutters on those fleeing the carnage, or neutron bombs on things like Oil Refineries (kill the people, save the infrastructure) to seize them outright. The idea of a Drone being that we could say kill a building or a convoy with no risk as opposed to say destroying the entire town, and we'd kill less people in absolute terms, while still breaking the will and minds of the people on the receiving end through the knowledge that we can and will erase anyone that we decide annoys us enough. Collateral damage to civilians is a good thing in war because of it's psychological impact, after all it makes one less likely to let a bunch of gun carriers hide out in town if they know there is a risk that the people of the town will die from a drone strike. Strictly speaking they might survive throwing out the guys with assault rifles and personal explosives especially with greater numbers, but they won't survive if inevitably the US shows up and decides to cut loose. The idea of psychological warfare is to make the enemy more afraid of you than they are of their own government, and to put survival before any kind of national pride or ideology. This is one of the reasons why I'm such a ruthless bastard in some of my posts, on the extreme end I feel a so called "war crime" can be a humanitarian act and in most cases is when conducted by a military. While unrelated to drones, in the big picture consider that if you send a group of psychopaths to take over a town, rape, torture, loot, etc... and make grotesque displays out of what's being done that would make extreme horror writers gag at the descriptions, you might ultimately spare the next ten towns that surrender or don't resist out of fear of what your going to do. The more people are afraid of what your willing to do, the less likely it becomes that your going to have to do it. What's more let's say due to truly psychotic sadism on part of the military you scare so many people that they flee the area, the towns and villages empty and everyone flees towards where their military is seeking protection and refuge. That's a great way to break a line and disrupt infrastructure since now that military has it's own cohesion threatened, either being demoralized by needing to slaughter their own people, or having their resources stretched trying to provide for the refugees. This is what "driving the enemy before you" is all about. What's more once you do that, and then defeat the opposing military the survivors are going to be so terrified and hopeless they will do whatever you say, and thus you need to kill less people. War sucks and is ugly, people forget it's a case where the biggest bastard wins, not the good guy, the tricks is to be more screwed up than the other guys BUT also remember it's "just" a war. This is why I feel that a lot of the push for moral wars is counter productive, and feel the idea of "War crimes" is sort of a joke, since in a real war there is no such things, done for the right reasons "War Crimes" can actually be fairly merciful, not to the people actually on the receiving end, but in the big picture. The trick though is to promote the knowledge with helplessness along with them, see, if your just mindlessly psychotic but don't have overwhelming force that's going to rally people worse, the point is when people fear what's coming and realize that they aren't going to be able to resist, and all say sending gueriellas is going to do is make it so the next group of guys get it 10x worse.
At any rate, to my way of thinking Drones are fairly "clean" we just need to stop moralizing about them and understand that even taking out dozens of targets in collateral damage is a good thing. You want the everyman to be afraid of the drones. We need to stop seeing that as being morally ambigious, and actually as fairly righteous in a time of conflict like this. Doing it for the hell of it is of course wrong, but in a war it's a way of making a strike both physical and psychological without doing as much damage as other methods would, and most importantly it's safe to our own people who should always be our own priority.
I don't expect many people to agree with me here, but that's how I think on warfare (as I've mentioned before). I actually prefer not to actually fight wars, but when the time comes and we need to represent our interests I believe in getting the job done, and morality isn't much of a concern. I think this is the attitude that should be reinforced by a responsible nation. Basically the way I see it is that if you want civilized relations with the USA, don't push things to the point where we want to send the military to represent our interests. The more scared people are of our military the less likely we have to use them... a point we forget, and a lack of fear has been deeply affecting our global standing and causing incursions into the territory of our allies as well as our sphere of influence.
At any rate I'm just rambling about the subject, and explaining why I'm not likely to ever watch this movie, as the review pretty much reinforces everything I've heard. The whole spin that it's "bad for our soldiers" apparently had some people I've heard talk about it claiming they vomited day glo since you know, running around someone else's back yard with a rifle where they can shoot you back is so much better for them. All war is traumatic, which is why we want to avoid it, and making examples out of people with Drones reduces the chances we have to keep doing it assuming we can prevent politics from hampering those activities too.
That said as "Evil Therumancer" I've been of the opinion for a while that dropping a few of our really big non-nuclear bombs might solve a lot of problems if we can keep the media under control. The way I see it is if we drop a half a dozen neutron bombs millions might die BUT the sheer horror of that example will probably ensure nobody wants to get involved in any conflicts where such a thing could happen for a long time to come. We can publically cry crocodile tears while making sure to not so subtly make it clear that diplomacy is a preference, but at the end of the day not our only way of backing our interests since we do have the nuts to use our technology when we have to. Basically kill a few (comparatively speaking) to save a lot which is key to a lot of my philosophy. To me if it brought about another 50 years of relative peace due to the fear caused by the example it would probably be worth it.... but as I said, not a popular point of view, especially hear. A lot of people do not seem to understand how doing really bad things can ever be the "good" thing to do in the big picture.