I think you should realize that pinboard's very nature and existence is a wonderful hack of the SV and "web 2.0" mindset and ecosystem.

You'd be surprised to learn than hackers are more than computer guys (even in the original e.g. MIT sense), and systems are far more than computer systems.

More specifically, an organization that's willing to burn a huge amount of credibility in order to avoid a tiny investment in an already-profitable (cf pg on ramen profitability) business whose proprietor doesn't fully conform with their arbitrary values. Given this, is the overall diversity of other YC founders any surprise?