I watched the film completely by accident, as a short-term 'de-escalation', and I can't say that I wasted my time. Although 'Uncle Sam' does not shine with artistic merit and is quite deserving of its rating, which I also join in.
It's just the idea itself that's good. At first one is in the mood for some kind of American quasi-patriotism, and then the nephew of Uncle Sam, who died in Kuwait under his own fire, pretends to be a little soldier, ready to go and fight wherever the president sends him ('a big giraffe, he knows best' - V. Vysotsky). And then there are the young fools who burn the flag and scold the national anthem ('we're so cool!') and the political men who regard America and its people as a springboard for their ambitions. And then there's the coffin-raising avenging uncle.
But it soon turns out that Uncle Zombie was a tyrant in the family, yes, it seems, and wherever he was sent to fight for the interests of the USA, big Uncle Sam, in spite of a lot of awards. And almost at the finale his 'diagnosis' sounds: 'You never fought for America, you just loved to kill!' That's the whole idea, that's the difference between real patriots of the country and personalities like our zombified uncle. And it's a good thing that this weak and low-budget film has such a clear and distinct idea! That's why I wrote these lines, keeping in mind that a lot of much more 'artistic' and expensive pictures have nothing like that.