Perhaps it would be better to talk about the complete failure of planned economies[1] (centralized) VS the success of market economies[2](distributed). I guess you could do both systems under a totalitarian regime or a democratic regime.

Most pro-socialist talk in the US today is probably talking about a market economy with a better social safety nets for the regular population (at the cost of the wealthy), something like the Nordic model[3], not a re-imagined Soviet Union.

There's no way any discussion of Socialism, Communism, Capitalism, Marxism, Leninism, Stalinism, Whateverism on the internet will bear any fruit today. No one even knows what they're talking about.

[1] https://en.wikipedia.org/wiki/Planned_economy [2] https://en.wikipedia.org/wiki/Market_economy [3] https://en.wikipedia.org/wiki/Nordic_model