I can see why people say NYCHA should me managed privately but I can gurantee you that living in a privately owned building doesn't guarantee things like this wont happen.

There are several stories of people in condos and luxury buildings with no heat, hot water, gas, water leaks, etc. as well. It got so bad that they started holding back rent in one luxury building in Brooklyn.
https://nypost.com/2022/12/27/luxury-building-tenants-have-crossfit-gym-but-no-heat-gas/

The problem in NYC is the supply of housing always works in the favor of landlords and property managers no matter who you are or how much you have. They get to hold out on fixing or improving anything while we deal with it or pay up to move elsewhere.