>>715338264
By your ""logic"", we would never have left the middle-age.
To me you just have a bad case of anarchist mindset where you can't cope with complexity so you hope for a single leader with big hands to make it simple for you by NOT giving you a choice.

You do not even follow your logic to its own conclusion because the reason you give "democracy bad!" imply it's also impossible to have a dictatorship on a galactic scale. The "one on top" would have no real control over twenty level of delegation.
The idea of dictatorship making super-project is just a trope to make stories more fun. It's not reality as big ass project like these are done better by democracies, because they won't be made to satisfy the hubris of a single person.

>a single percentage of people informed enough to make good decisions
Obligatory "as opposed to a dictator and his clique?". You clearly aren't well informed.
Anyway, I would actually expect better informed people the more difficult it becomes to tailor craft a lie if there's many distinct "culture".
A dictator would in-fact try to make the whole population into a single culture of slave.