Maybe you too should watch the movie again then, because this point clearly open to discussion. One of the subtleties of the movie is that it doesn't directly criticize the idea of a democracy where only people who do service get to vote. If it had simply painted this system as a "bad bad dystopian" one the movie would have been a lot more black and white, and a lot more movie critics would have understood it.
Instead the authors do not make a judgement on the political system they depict. Sure there are some more or less fascist like images here and there, maybe in an effort to confuse the critics. But the system seems to work. The people who don't vote (Rico's parents) look quite well off, happy and not especially oppressed. The character who embodies the system the most - Racszak (Michael Ironside) - is arguably one of the most human and likable.
Instead the real human failure in the story is that first we start the war with the "bugs" (it's a shot that only lasts a few seconds so you have to watch carefully, when religious extremists cross the border and colonize a planet in their territory), and then we paint them as the bad guys anyway. And from the moment we are at war with them, we totally "de-humanize" them and act towards them in a quite psychopathic and sadistic way. I'd argue it would happen the exact same way in a nice non-fascist non-military-dominated universal suffrage democracy like we are supposed to have currently.