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Re:John Carmack on Functional Programming (2013) [video] by optimusclimb on Thursday August 17, 2017 @01:57PM (#15039146)
imho this isn't specific to HN, Reddit is plagued by "downvote to disagree."

Downvoting should be for, as you said, flagging aggressive, off-topic comments.

I've really lost interest in commenting on reddit, because if you say anything that disagrees with or goes against a certain sub-reddits current group think on a subject, you're just going to get downvoted into oblivion. It really just intensifies the echo-chamber effect.

Re:John Carmack on Functional Programming (2013) [video] by dingo_bat on Thursday August 17, 2017 @10:50PM (#15043135)
Do you think upvoting something you agree with is a valid action? If yes, does it not follow that downvote to disagree is also valid?
Re:John Carmack on Functional Programming (2013) [video] by JdeBP on Thursday August 24, 2017 @05:43AM (#15088759)
You need to observe that the asymmetry is built into Hacker News itself, thereby contradicting the hypothesis that these are supposed to be symmetric actions. There is, now, no longer a downvote button against your comment here, for example; there is still an upvote button, though.