Although especially noticeable with Bitcoin, it is in general a prominent flaw of HN, the top comment is always something negative. Maybe its because users here feel thay are smarter by trashing stuff and dont want to be caught liking the wrong stuff, so they upvote whatever negative comment is gaining momentum.
Parent in this case, by the way, is wrong. Blockchain.info is a remarkably well designed and implemented site, if not fully consistent with Bitcoin's spirit, pretty close to it.