I believe that you have expressed this stance for at least several years now.
Perhaps these people's perceptions are well founded. It seems as if an orthodoxy is being enforced & people whose opinions that run counter to the orthodoxy, particularly when the orthodoxy is covertly political while masquerading as a truism.
You replied to an email from me stating a similar position...except you pointed out opinions of both the left & right of the political divide are moderated. I don't think that's that's the important imbalance though. It's the unorthodox who are more heavily moderated. There's a double standard, where the orthodox frame is given far more leeway, even to the point of breaking guidelines, without moderation.
I don't see much public self reflection on the moderation...mostly denial & self justification whenever someone brings it up. Seems like the same gas lighting that the corporate media, "thought leaders", the management class, the expert class, & elites push onto their subjects.
Perhaps some of the "strong passions" are in part inflamed by the negative reinforcement of the moderation activities...being punished for expressing observations & thoughts, taking a stand on covertly political topics, expressing the unorthodox. I have learned to not care about being downvoted or flagged or being threatened to be banned from this site or told to slow down as long as I am seeking truth & expressing in pursuit of truth. If my karma goes negative, so be it. I've learned to not be impressed by vanity metrics.
Right now it seems that nobody moderates the moderators...meaning there's no effective feedback about moderation activity. The moderator can simply use the same canned denial whenever any form of critique comes up. The downvoter or flagger can use the same knee jerk reaction to quash any self determined unapproved expression. It's too easy. It creates covert hostility on the site.
One thing that could help is transparency of voting & flagging. The people who do these activities also have bias & I don't think it's always done in good faith nor does it always support the stated guidelines of this site. Perhaps a form to explain why the downvote or flagging was done & how the guidelines or culture of the site was violated would reduce retaliatory downvoting/flagging.
If I make a comment I put in effort to think about & express my opinion in the public record. I'm motivated to put forth this effort when I think like I can contribute some to the discussion...which often occurs when the trend of the discussion is perceived to possibly be leading down a false or unoptimal path...an unorthodox view.
Downvoting/flagging should also require effort to weed out retaliation & have a cost if done in bad faith. If someone feels justified & can express why they are justified in downvoting/flagging, why not make it public record as well? The person whose expression was downvoted or flagged will have feedback to improve their expression if they violated a HN guideline. As it stands now, the author has to guess...with a possibility that the downvoting/flagging occurred in bad faith.
I appreciate whoever reads this long comment. I have learned much about human & cultural nature in participating with this site & I am grateful for this.