To be fair, four of the five boroughs have greater populations than multiple states (Staten Island being the exception). I don’t think any other city in the US has comparable subdivisions.
It’s also hard to overstate the historical and cultural significance of NYC in the US. And this is coming from a New Englander who is obliged to say, “New York sucks.”
Yeah, the stainless steel ones are great if you have a dishwasher. I can understand if people don’t want the upkeep of replacing filters and that black ring thing around the pump, though. And honestly the pump itself needs to be replaced every 1.5-2 years even if you clean it well.