I think many of the comments in this discussion are confusing the concept of "tribes" (in-groups & out-groups) with 'tribalism' - the form of civic society. This article is about the civic society called 'tribalism'. The contrast to 'tribalism' is 'rule of law'.

Tribalism is essentially a belief that the only reason others won't bully you is because they can't. Bully or be bullied. Rule of law instead says that it is the civic code who is the arbiter of right. 'Tribalism' vs 'rule of law' are both essentially frameworks of society and government.