This feels like it's one step removed from the sort of people who hate listened to Howard Stern in the 90s. I get it, there are dumb comments. Whatever. It's the Internet. But posting screenshots of random HN comments to some Twitter hashtag so you and your followers can have a laugh? That's something.
People on HN do the same with just about everyone and everything outside the community, all the time. The site guidelines prevent HN from getting what it gives so some people choose to seek catharsis elsewhere.
