I mean, it has definitive flaws. Like convoluted rules that lead to capture by minority. And that minority is able tweak the rules further so that they need less and less votes to win more and more power.

Every democracy has this.

Are you saying the US political system is the gold standard / state of the art democracy model?

No, I'm just saying it is a democracy

What’s the test?

Anything that calls itself a democracy just is?

Is it falsifiable?