I think you're right. But I also think that "anarchists" are actually after the stage where people "form themselves into groups with rules and laws and enforcement". They don't really want anarchy, they want a "reconstitution".

And I can understand why. There seem to be limits on how much a society can change after its constitution. It can change, but over time it carries more and more baggage. In order for significant change, a society has to be reconstituted. There has to be a rupture, a new chapter, etc.

I think anarchists are instinctively seeking the potentiality, the excitement that comes with that rupture.