I don't think it is true that the best outcome individually is if you're the only one to read the comments. In the wisdom of the crowds formulation the average is closest, but on Hacker News and similar websites there is a popularity contest which biases the responses. The average over a biased sample doesn't have the same mathematical reasoning suggesting it is better than any individuals estimate.
To use a specific example there was once a claim about a board seat for Tesla going to someone that people tend to dislike. The comments were largely in agreement that this would happen and it would happen basically because it was outraging and seemed evil which agreed with the commenters preconceptions. Anyone who posted contrary to this - which I did, quoting a primary source which disagreed with the claim, got downvoted. Ultimately I was right and the board seat didn't go to the 'evil' person.
This isn't intended to be a critique of me getting downvoted. Instead I'm trying to point out that if you read all the comments the consensus in the comments doesn't approximate the correct answer. So what do you have to do? You have to go primary sources in order to be able to get an unbiased estimator. Maybe the comments link to one, which is nice, but notice: you can't rely on the comments alone. Which means it was the people who read the primary sources, not the people who read the comments, which get the best outcome individually.
Unfortunately, the people who are doing this aren't becoming popular for doing this when it helps them. Quite the opposite. When this is effective, it is effective entirely because it is not in line with the popular opinion.
To use a specific example there was once a claim about a board seat for Tesla going to someone that people tend to dislike. The comments were largely in agreement that this would happen and it would happen basically because it was outraging and seemed evil which agreed with the commenters preconceptions. Anyone who posted contrary to this - which I did, quoting a primary source which disagreed with the claim, got downvoted. Ultimately I was right and the board seat didn't go to the 'evil' person.
This isn't intended to be a critique of me getting downvoted. Instead I'm trying to point out that if you read all the comments the consensus in the comments doesn't approximate the correct answer. So what do you have to do? You have to go primary sources in order to be able to get an unbiased estimator. Maybe the comments link to one, which is nice, but notice: you can't rely on the comments alone. Which means it was the people who read the primary sources, not the people who read the comments, which get the best outcome individually.
Unfortunately, the people who are doing this aren't becoming popular for doing this when it helps them. Quite the opposite. When this is effective, it is effective entirely because it is not in line with the popular opinion.