IMHO, I think they really fired me because I one of the co-founders didn't like me because graduated from the University of Cincinnati instead of MIT, Stanford, Harvard, etc.

I figured this out later when I checked their blog and he had prominently mentioned how they like to make sure their candidates are the "right people" from the "right schools." It was a very explicit statement, essentially that being from the "right school" is part of being the "right person."

I encountered this a lot in Boston actually, to the point that I developed a complex about how I couldn't really do anything because I hadn't gone to Harvard. Then I moved away and realized that the rest of the world outside this bubble doesn't care about that.