Nope. North Korea is a democracy! A very dictatorship-like democracy but still a democracy. They even have elections - but with Kim Jong Un being the only candidate.
If I have a Y chromosome but I don't have a dick, I'm still a man. I might not look like one but I still am. NK might look like a democracy on paper but in actuality it's a dictatorship. The choices are dictated, therefore they're not choices. Would you rather be shot in the eye or stabbed in the back of the head? Well that's not much of a choice is it?
A better metaphor is a man who looks like a man, sounds like a man, and acts like a man, but is female. It looks, sounds, and appears to be a dictatorship, but it is still a democracy.
A tomato, which has none of the flavor characteristics of a fruit, but it kinda technically is, though most would never group it together with common fruits.
Also if you don't get to choose which choices are available then it's not true choice.