Looked at several of the links. These aren’t examples of anarchic societies, they’re examples of clan-based rather than state societies.
The two things are very different.
The author’s penchant seems to be for classifying any society without a formal legal system as anarchy. I very much doubt those who lived in these societies would have agreed.
Any stateless society is an anarchy. Anarchy doesn’t mean there aren’t rules, it means there is no one with the monopoly power to make law, enforce law or judge compliance to any law. It means there is no monopolist of ultimate decision making.