It's the city's responsibility (and in its best interests) to create a safe, effective transportation network that moves as many people as efficiently as possible. The better the transportation network of a city runs, the better that city will be, as less time is wasted in transit and jobs are performed more efficiently, and more taxes are paid and more businesses and people move in. It is simply physically impossible to service even a fraction of the transportation needs of New York City using full-size single-occupancy motor vehicles. The city is way too dense and there isn't nearly enough space for that many vehicles, not even if you ripped out entire blocks and laid down ten-lane highways through Manhattan. So the city must support more efficient transportation methods that can scale to the density of the city, and these include trains, buses, and last mile micro-mobility solutions like bikes, bike share, scooters, etc.
So in this context, what exactly is your argument? Are you saying that it's OK for it to be rampantly unsafe for people to use the kinds of scaleable options that are necessary to efficiently scale transportation in this city? Because I can tell you the city certainly doesn't think so, and is putting in dozens of miles of new protected bike lanes each year as part of the long-running Vision Zero initiative. And yes, we're even starting to deprioritize vehicles, as you've seen with the 14th St busway recently.