It’s an operation designed primarily around origin & destination traffic (one might argue more destination than origin, though I don’t know that for a fact), not a connecting hub. I forget whether AA uses the term “hub” these days, but whatever they call it, they appropriately refer to “New York”, not either airport, as they have since the pmAA “cornerstone” days.

Either way, AA has two kinds of markets: those with service only to hubs, and the nine markets with significant non-hub service. Markets like BOS and SFO are clearly in the former category; NYC is clearly in the latter.