Likewise, if you know that people tend to come to religious consensuses due to early indoctrination and community reinforcement, you should take religious consensuses as evidence proportional to your confidence that those processes will tend to produce true beliefs.

That's how scientific beliefs become consensus too. It becomes a question of how the doctrine was originally chosen and on what criterion the culture most rewards oneupmanship attempts. ie. You can put more trust in science based indoctrination because you believe that if the powers that be were indoctrinating you with beliefs that can be contradicted via science rituals another power would have an excuse to ridicule them.