We reached the max comment depth. I don’t disagree with your points. One point of clarification is that when I say democracy I mean republican or parliamentarian style government.
I sympathize with the critique of democracy. However the failure of more authoritarian systems of governing is and always has been the lack of transparency and trust. In a democratic style of government there’s at least an attempt of oversight. Good luck making a FOIA request to a king or private corporation. Autocrats abuse this flaw to amass power and wealth for themselves at the expense of the population.
Democracy is also inextricably tied to civil liberties. Disenfranchised citizens have less recourse when their civil liberties are attacked