A system that makes decisions by voting converges on the average of the intelligence of it's members.
A system which works *significantly* better is one where some people have total control (CEOs designing a product) and then everyone else decides if they should buy it / work there. Then people are "voting" on quality of the results, rather than decisions that lead to them.
Why it works is because smartest people -> best results, so system intelligence converges on "smartest" rather than "average".
BTW: Fedi instances are the same way: Each admins is god of his domain, people choose which domain to exist in.
However, CEOs do bad things like dumping toxic waste in a community, and you can't just "opt out" of eating/drinking/breathing it like you can choose not to buy their product. So then we're back to the bad democratic system, to try to regulate and restrain them.
Nobody has figured out how to implement the this "choice of kings" model in government, so we're stuck with stuff that we all know is bad.