Let’s just turn it around.

Why don’t you show me where anyone is claiming such a thing? You conflated practices of “shunning” with the customs of all “tribal people.” There are variants of exile and rehabilitation that run through a spectrum of possible options to all people who are self governing. Who exactly are you arguing with?

Which “tribal people?” When? There are tribal people all over the world. They don’t all share the same “power structure.”