What prescription are your eyeglasses? Because I'd say about 80% of people here wouldn't lift a finger. Sure there are good people among the thousands that would, but many more apparently couldn't give a rat's rear end about anyone but themselves, or are too unobservant to even notice a problem. I see it all day long in Manhattan. In the outer boroughs there is a better chance of people coming to someone's aid, at least when it involves a street crime such as a mugging.
I have 20-20. I’ve never seen a NYer turn up anyone in distress on the streets of NYC. Going on 40 years. You have your experiences, I have mine.