Nah, Mets fans are hard core townies from Lawn Guyland, Queens, and Brooklyn who are there to the bitter end. You will NEVER find some trustafarian punk who just moved to the city (Williamsburg!) at a Mets game, but you will find plenty of such people at Yank-off games.
BTW: A-Rod is just too pretty to play on a baseball diamond. He looks like he should be playing on a soccer field instead.
Met fans are bridge and tunnel crew, for sure, but not diehards by any stretch.
Lots of guys who work on wall street and high five each other.