One can never know for sure, but the attempt to truly try to understand what another means can provide great insight. IMO, it is a prerequisite before any criticism is leveled. This goes for all people, not just those proven to be among the best ever at what they do. In this particular case, it was very easy to understand, if not agree with, the idea that he needs to be taught almost everything the Pats do.
People are quick to call BB "arrogant" or say he's being "cute", but given his extreme adaptability, his ego is far more in check than most.
Look at the perspective I presented. From a Pats perspective, he has to learn almost everything TEs do in that system. It's fine to disagree with such a statement, but assuming another needs to "get over themselves" for holding the opposite opinion betrays a rush to judgement.