The current bleakness in New York pro football will echo into the 22nd century, when some of this century's young fans being scarred by the awfulness will be old women and men still rooting for teams from distant burgs because of what is going on now.
How do we know this? Because it has happened before. It was the 1970s, and its scars still are evident, bridging two millennia.
There is a generational blip on the metropolitan-area fandom radar for people now approximately in their 50s that includes unnatural numbers of Cowboys, Steelers, Raiders and Dolphins fans, with others mixed in.