You need to describe the organization of such a society: how do things get done. Who decides what gets done and how is it decided. How do you stop those humans who are smarter, and more charismatic from rallying a following and imposing their will? The natural state of humanity is hierarchical, now that doesn’t mean that because it’s natural it needs to stay that way but I am simply making the descriptive claim that without guardrails hierarchy will form.
I have thought about this a little though I admit to be ignorant about anarchic literature, Im basing myself mostly on the basic and most well known claims. But from what I know of the goals of the ideology, for me anarchism is only possible through the trans human project. Humans would transcend the genetical and physical differences that make us intrinsically different and therefore more capable than others. We would be truly equal, though not human in any sense of the word anymore. More like a program that can reach consensus without dissenting opinions causing rifts because we are in fact a one who also happens to be many if that makes sense? Like the Geth in Mass Effect. A hive mind.