The problem with that is often it gives equal credence to unequal opinions. And not everyone has the critical thinking skills and freedom from bias that they think they do. I'd argue that really nobody is able to fully remove from themselves any biases that may make them more likely to believe some comment over another.

Voting does nothing for this either, as people may upvote a popular lie or misconception, or downvote an uncomfortable truth - I used to see this happen often in the science-based subreddits when I bothered with them on reddit.