No, that's not fair. The commenters you're referring to exist, and so do many others.
Edit: There's a pattern on HN, and maybe other internet communities as well, where the first comments to appear on a topic (especially one on which people are divided and have strong feelings) tend to be angry, reflexive ones by people who are quickly triggered and respond from pre-existing judgments. That doesn't mean they're representative of the community. Just the opposite: the majority of the community is more thoughtful than that, and thoughtful responses take longer to come up with. (It took me 30x longer to write this paragraph than the first one.)
As a thread continues, more thoughtful responses typically emerge. Such comments take longer to read and consider, too. These eventually get upvoted. The process takes time, and you can see it clearly in the current thread.