Society came very close to realizing the beginnings of a decent state in Catalonia during the Spanish Civil War. George Orwell faught in it, and wrote about what he saw that society achieving in his book, Homage to Catalonia.
Centralization of power has so far made every society deeply flawed or even hellish. The three societies you mentioned are the only ones where power was purposefully decentralized, and that seems to be the most promising path forward that was never allowed to stretch its legs.
I don't think so. Pretty much all the negative things about Bolsheviks were already prominently there by 1919. Anti-democracy, mass terror, torture, concentration camps, you name it.
You get my point, though. It's one thing to propose an idyllic society. It's another thing to try to implement it. In all cases where there's been a serious attempt at implementation on any scale above local and short-lived, we view the results with horror.