I think that if you examine the meta on HN dispassionately you'll see it's actually a very good reason.
It often gets couched in different language, but a great deal of HNers have a large dislike of HN because of either groupthink or mainstream-aversion.
Because it's a stupid reason. You would get the same response if you suggested that the reason was that HNers love to hate google because they hate logos with color in them.