I mean, what we have now is a clique of ideologically-aligned people who insta-approve each other’s bad PRs outside their domain and ignore or jam-up the PRs of people outside their clique.

You can say it’s a failure of management, but this is the primary tool used by the ideologues. And I’ve seen it used so at various places.

What I haven’t seen is a real dissemination of knowledge about the code via review. At least not above and beyond what can be achieved by looking at the code and using blame to see the changesets and looking at the associated issues.