Notice the change in his demeanor at the 0:47 second mark when facing the guy holding the camera. He does it again at the 1:15 mark and the 1:48 mark. Short answers; unfriendly vibe. He was giving longer answers to everyone else and smiling as well. He definitely had a problem with that person.
Do you think Nick Symmonds would ever give a weak interview like that? Nope. Even if it was to someone he had a problem with, he would first call them out on camera, then proceed to answer any question they have, with more than curt answers.
Galen, this is (one reason) why people don't like you.