This is a great summary of this issues with trying to even determine objective reality. I would say that the simple popular consensus approach is not even that great because there are plenty of things in the past that have had consensus that were later determined to be objectively false.
My point was even a step before this, that even getting the consensus facts correct is a major challenge when the internet is written by children, bored volunteers, mechanical Turk contributors from across the world, adversarial actors, and content producers churning clickbait. Having a professional journalist investigate a topic, then have a separate professional fact-check, and yet another professional edit all for a publication that is trying hard to maintain a reputation and will publish retractions if necessary is all miles better as a starting point for determining truth, but sadly that cultural activity is nearly dead.
My point was even a step before this, that even getting the consensus facts correct is a major challenge when the internet is written by children, bored volunteers, mechanical Turk contributors from across the world, adversarial actors, and content producers churning clickbait. Having a professional journalist investigate a topic, then have a separate professional fact-check, and yet another professional edit all for a publication that is trying hard to maintain a reputation and will publish retractions if necessary is all miles better as a starting point for determining truth, but sadly that cultural activity is nearly dead.