You didn't realize you just used exactly the same excuse that the US used to threaten other countries for dozens of years, did you?
Yes. And liberal democracy (the US in particular) is far from perfect. But it is objectively better than a one party dictatorship. It is also less "threatening" from an international relations perspective.
Objectively better than a one-party dictatorship? On what measures?
Great, finally it's not in the name of God and human rights