The issue I see is not related to whether a site contains a balanced view point or not. That is up to honest moderation based on the site's guidelines.
The main issue is how a site provides tools for promoting healthy discussion. As long as a submission cooperates with a site's guidelines, the site's (moral) duty after that is to ensure that people that make good use of logic, reason, facts, and sources have their voices heard. What I see sometimes on this site is that people that have legitimate arguments and authoritative sources have their posts silenced (greyed out) or flagged just because a majority group of users disagreed emotionally. To me, that is a red flag. I believe that HN tries it's best to promote healthy discourse but I also believe that there is more they can do to optimize it.
The main issue is how a site provides tools for promoting healthy discussion. As long as a submission cooperates with a site's guidelines, the site's (moral) duty after that is to ensure that people that make good use of logic, reason, facts, and sources have their voices heard. What I see sometimes on this site is that people that have legitimate arguments and authoritative sources have their posts silenced (greyed out) or flagged just because a majority group of users disagreed emotionally. To me, that is a red flag. I believe that HN tries it's best to promote healthy discourse but I also believe that there is more they can do to optimize it.