There's probably more than one person on HN
I suppose the easy guess is just that people who disagree with a story are more likely to come argue in the comments than people who read it and agree, so every story gets its opposite upvoted.
There are definite, identifiable leanings from the denizens here on HN.
If you want to be the top comment, your dismissal needs to be more middlebrow and noncommittal.
Their comment: Windows is terrible. (No downvotes.)
My comment: Windows is the best. (-4 downvotes.)