EZLN, the favorite example of Anarchists and revisionists of an alternative to Marxism-Leninism, has now collapsed due to lack of solid theoretical fundamentals.
Marxism-Leninism is the consistent science of the liberation of the working masses, and no viable alternatives have been seen to date.
I don't think anybody is saying that, and we all hope that Zapatismo can and will evolve based on their current experience.