Authoritarianism is a measure of how monopolized and heirarchical the decision-making process is within an organization. There’s nothing meaningless about that, it’s a very specific thing. Now if you use the definition from Engels, where your stomach is authoritarian when it’s hungry, it’s definitely meaningless, but to pretend that is the only or even the main definition is just asinine.
Indonesia or Guatemala
Are you referring to Jacobo Arbenz and Sukarno? Those were pacifists who refused to arm themselves. That has nothing to do with decentralization.
If you don’t understand the material trends of society
You can’t! No one can! Society is not a monolith! It’s billions of people with different thoughts and feelings and ideals and desires and conditions, you can’t condense them all into a theory, you’re not smart for thinking you can. Guessing that society will definitely surely follow a very specific process to the letter is again, purely self-masturbatory fatalism. It’s Not Even Wrong.
Things are right when they make sense and follow logic and empiric evidence, not when a genius says them. Tell me what they said and we may discuss it, to simply say “oh but a genius said so” is meaningless.