My guess is that "Yeah, me too" posts rarely add anything to the conversation - sorry, I'm being blunt here, but that's the way HN rolls. If you find a post humorous, just upvote and move on. You'll get your chance to crack a joke in due time.
The contrast is with ten-comment-long Redditesque variants-on-a-theme threads, which I personally enjoy - on Reddit. Here, I'd rather cut to the chase with insightful commentary.
(oh come one people, downvotes? You can't tell the OP is attempting humor, and I'm trying to acknowledge that?)