The combined population of Bergen, Hudson, Essex, Union and Passaic counties, New Jersey, is 3.7 million people covering an area not much larger than the five boroughs of NYC, comprised of one dense population block with no distinct borders between the individual towns. If this area were all one city, it would be the third largest city in the United States, behind NYC and L.A., and ahead of Chicago.
While some of those residents are NYC commuters, their political, cultural and local news interests are mainly focused on their home in New Jersey, not New York. But since mass media is all about money, every single outlet originally from New Jersey has moved itself to NYC to chase the money in the bigger, more well-defined city. Even WNET, the public broadcaster licensed to Newark, NJ, identifies as New York Public Media because New York is where they can get more donor money.
The same is true on a smaller scale in the central and southern parts of New Jersey closer to Philadelphia. Every outlet close enough to Philadelphia caters to Philadelphia, with the notable exception of WKXW which is a one-sided conservative talk outlet.
It turns out one of the most populous areas in the United States is a bit of a news desert. So, a New Jersey based public broadcaster with a mission of focusing on New Jersey news, culture and politics does fill a programming hole and really is in the best interest of its residents.