There's the infamous post dismissing DropBox ( https://news.ycombinator.com/item?id=9224 )
love that Dropbox has became textbook example of viral marketing
But such is normal with normies providing startup critiques, if you just look at every announcement and say "this will fail", you'd be right 99% of the time.
So nothing really has changed in this community's vibes.
I mean - just looked at this downvoted comment essentially saying the same thing - https://news.ycombinator.com/item?id=49119464. And also the intensity of the replies.