Vouched, I feel similarly.
(I can’t possibly understand this being downvoted.
The downvote button isn’t an “I disagree” button.)
From HN guidelines:
> Please don't comment about the voting on comments. It never does any good, and it makes boring reading.
and yes, downvoting is a perfectly fine disagree button, what else do you think it is
Perhaps because the comment didn't add to the discussion? like all those +1 comments in GitHub issues.