Anarchy doesn't really exist. It's just that people want to go back to a state before the current contracts and laws were passed. What would happen? The same kinds of associations, rules, and laws would form again.
Basically, they're all over complexity theory and how to use strong local interactions to develop self-organising non-local societies. Which I personally think makes anarcho-collectivism possibly the most sophisticated and futuristic of current political models. They were two decades ahead of the "localism" and "direct democracy" ideologies, and with a far better understanding of the maths.