non-NYC residents that work in NYC pay NYC income taxes...
When did that start? When I lived in NY that wasn’t the case—police, fire, and sanitation unions wouldn’t stand for it.
Don't know as these people who left the "CITY" in the spring would still be "part-year" residents of NYC and full residents of NY State. When I do tax returns for NY wage W2s, there is a checkbox for NYC and Yonkers residents. If they are not resident there then generally their "Local" withholdings are the tax payment to the NYC, however if they are residents then I think it increases the NY State amount due.
This year, boy is that residency fight going to be a knock-down FIGHT! It was bad enough when residents fled to Florida like Rush BUT a whole community of WEALTH outside those magical boundaries, WOW!