i'm sure jay is a "good normal" guy in real life with family and friends and what not, but he has to know he has to be or at least TRY to be different acting when he's in the media and promoting himself and his industry.
yeah, he comes across as boring, but his emotions and his voice, it's almost like he is exhausted all the time and a combination as well of almost being painfully shy and scared/nervous, and maybe he thinks he has to act i don't know kind of masculine and tough and rough and oh so serious as a mr.olympia and that it wouldn't be "appropriate or becoming" for him to clown around or crack jokes or hell even change the tone of his voice, etcetera.