Liverpool is in a different league - this is Scouse, Not English taken to the next level (with a dash of Cosmic Scouser). I reckon I could send this out to my mates on WhatsApp and get a couple of unironic "is right!" replies. And more "fuck's sake" ones.
Technically it is not. The city of New York encompasses 3 Islands (Including Long Island, the largest island in America) and only a small peninsula that is actually on the Mainland proper. The result is that about 90% of New York City is not on the American mainland/continent.
It is mawkish perhaps (myself an American Britizen, admire my glass house and my stiff overarm throw), but I will defend them. It is laudable to be proud of one's town, rather than consign oneself to nationalist sentiments.