They shut down trains at nights or on weekends to fix the tracks while employing shuttle buses to carry folks to their stations.
It’s not a perfect system but adding context to that pic.
MTA has the hardest job. If anything there’s a wider discussion about the state of American infrastructure but the MTA has it rough. MTA has support a metro area of 20M, 24/7, in one of the oldest cities in America. People bytch when they opt to fix a line, they bytch when they raise fares. Trains and buses are the only logical way to have the city running and they can’t be down for extended periods. MTA is probably 20/30 years behind what it should be. If they take down one of these lines to update them, real estate developers, residents and drivers will complain and the media feeds on that.
All the native NYers I know are leaving or planning to leave, it’s yall people coming here from the south and Midwest who keeping coming here. City hasn’t been the same for a while but it’s hard to get the kind of money and freedom you have here in other places.