Well, to be perfectly fair, it's not really acceptable for people to fill threads with "me too", "I really like this!", or "I can't wait for this to come out!" sort of drivel. When people try to come up with meaningful points to discuss about a particular topic, it's a lot easier to find faults with a particular idea than it is to find positives or predict the potential of the idea.
It would seem like many on HN has a very extremely regressive, anti-intellectual, pro-status quo bent as well. See old threads about Dropbox and the comments on this story about Prime Air. It seems like a large number of commentaries here are just looking for every excuse to complain or find fault, yet those same folks would think Bitcoin was the cat's meow, despite a myriad of potential issues with that.