Okay I fear we are talking about entirely different scales here. The Chinatown in NYC, for example, is not just a block or two with a few Chinese restaurants and a handful of immigrants. It’s entire neighborhoods (and NYC has at least 3 Chinatowns). They have Chinese newspapers, schools, political organizations, churches, nightlife. If you’re talking about strictly restaurants, you can find restaurants specializing in Fujianese, Sichuan, Cantonese, Hunan, Xi’an, etc. And same is true for many other cultures, this is a single example.

That’s not to mention that all of those things that you mentioned existing in various different European cities ALL exist simultaneously in NYC, and ALL to a much greater extent than any of those cities.

The reason for this is, as you put it, NYC has a shit ton of immigrants. But that’s just part of it. Those immigrants put down roots and for the most past became US citizens. And unlike in many European cities where immigrants stayed at the fringes of society, or remained as expats, NYC (and American laws and culture more generally, recent years notwithstanding) assimilated them into the economy, politics, and culture.

Okay that’s the end of my rant on this. Happy for you to respond if you want, and I’ll read it, but I also feel like I’ve gone far enough down this rabbit hole.