While I agree with the "Fickle Fan" concept he really does tail off and in fact doesn't practice what he preaches.
At the end he says he roots for the Wizards, Ravens, and Mets ... well if he grew up in NYC why does he not support the Knicks, Giants, or Jets?
He can't very well like the Ravens for two reasons. Either he was a fan of the Baltimore Colts which have sense relocated and he should root for Indy, or he was a fan of Cleveland which relocated to Baltimore but have their team back so he should be rooting for the Browns again.