It's pretty often that stuff which is factually wrong but meets emotional needs gets upvoted without a second thought. Disagreement with the notion the world is ending or Trump is literally James Harden and is gonna start the Holocaust (a popular feeling at HN 4 months ago) gets swiftly downvoted because it doesn't meet how people feel.
Every time one of those groupthinky discussions happens it makes HN less attractive to informed discussion.
I'm sitting at -12 in a thread from yesterday in which a guy responded "No offence you don't seem to have much knowledge of post ww2 history" after he was the one who made a weird historical analogy and I more or less copypastad part of a wiki article on the issue. I don't really care about being wrong or losing Internet points, but when stuff like that happens it just convinces me that even really intelligent people would rather agree with their biases over actually debating something. No thanks. It's the kind of behavior expected on r/politics.
For the record I'm not a Trump supporter, but I can see that when it comes to politics people think emotionally and ideologically, and very few are asking themselves "have I not made any mistakes?" in the same way we do (everyone does make mistakes) when we care about being proficient.
I studied economics and had a passion for public policy and realized how corrupt that all is. There's no moral excuse for anyone to still suffer in 2017--but it persists. People are irrational, greedy, and selfish. Not all, but enough.
So not everyone here tries to silence alternate viewpoints, at least.
The parent post was at +5 and now it's in the grey. The downvoters don't bother responding, they just downvote, because differing opinions aren't welcomed.