I think that sums up why you got rejected. Over the years I've found anything negative said during an interview process works against you. I really noticed this when I had a job I hated and some of that kept creeping into my interviews with me saying something about it (varied from rant to a few comments) and I was interviewing for a few months... I noticed this and consciously edited it out and had 2 offers in the next couple weeks. I've noticed it more subtly after that and have sense tried to make sure I stay 100% positive in my interviews.