For immigrants it is much easier in NYC than anywhere else. There are agencies for almost 1/2 the languages in the world probably in brooklyn alone. (or at least it sounds that way when walking down the street.)
I never heard of a Brooklynarean. But these immigrants do not care if they live in brooklyn as opposed to anywhere else. It’s just the services/translators etc. plain and simple easier to blend in. Also job wise they get jobs while others fight over minimum wage.