I get wanting school closed, but people shouldn't be surprised it isn't, unless they are new here. NYC schools are very stingy with school closings. Once the actual storm is over and hours of plowing has occurred, it takes a near complete failure of the subway system to close schools. Or something like 2010 with stranded cars, plows, and buses all over the city. Also there is no extra time baked into the schedule, so it has to be made up somewhere else. Spring break, extra day in late June?
If school is open but hardly anyone shows up it still counts as an instruction day. Id rather that than losing a holiday later on or delayed summer vacation. I don't think they like to do remote learning without preparing for it in the days prior, but this is coming off of mid winter recess plus the forecast of an actual blizzard developed fast.