I've had comments downvoted that might have expressed an unpopular but not necessarily wrong opinion. Getting downvoted with no comments as to why is really frustrating. Especially if I'm making a good-faith effort to participate honestly rather than trolling or whatever.
I get that not all downvotes NEED a comment categorically but there's some meat on the "downvotes deserve comments" bones.
Yes, and it's especially frustrating when you are a newer user and trying to "learn the rules" and contribute constructively. Although I understand HN is cautious about welcoming new users in general, it probably ought to welcome more warmly new users who are trying to be constructive.
Also: A couple times I have accidentally hit the down arrow. There is no undo. How does this relate to comment quality? The only remedy is to add a "Sorry, I downvoted you accidentally" comment, which I've seen people do. Although it's good etiquette that's a relatively low-quality comment.
I think that downvotes without context or downvotes without comments would me more tolerable if downvotes didn't also automatically white out text - maybe there should be a margin of two or three before that happens to allow for the inevitable drive-bys and people who just don't like what you say but don't care enough to refute it.
I get that not all downvotes NEED a comment categorically but there's some meat on the "downvotes deserve comments" bones.