The pandemic has created a lot of problems and also illustrated existing ones. There are piles of reasons people don't want to commute. Sure, in good times it's a pain. Hours out of your day. I learned to live with it and did so for years despite the worse than mediocre LIRR, which averages maybe 30mph on a good day if you are in diesel country, and has numerous track, switch and train breakdowns. Another problem is that when you work in Manhattan, most affordable eateries are long gone - tear down an old building, put up another office building and lose affordable places to eat. When crime became a problem in the passage between Penn and 6th Ave, instead of a rehab, cameras and patrols, they closed it, and the sidewalks were saturated. Some bright idea in MTA and NYC DOT, and the one bus that went to and from Penn got moved some blocks away. Firm I was working for moved its office to White Plains - because that's where the bosses live. Other firms moved offices to Jersey City, Newark, even western NJ, Purchase, etc. So commutes got a lot worse for many, ticket prices went way up, subway got worse and worse - not just the breakdowns and danger, but, for instance, elevators for the IRT at Penn turning into vertically mobile urinals.
People who still have to commute have abandoned the run down, overcrowded commuter trains - if they can, service has been decreased in many cases. But that's left the roads on all sides of NYC far more inundated.
Solutions - a lot more repairs to trains, better and extended routes, hotelling for workers with hybrid, company or public eateries that are affordable, more train capacity (MTA jut proposed REDUCING rush hour service), cleaning up the rot and crime in the subways instead of making excuses.
As to the Cutoff, sure, right now fewer are commuting. But the need is still there. Plus the Amtrak service could be a huge tourism boom. It's not like there aren't places for tourists to go, but if you are a NYC resident, you may well not have a car. And we don't just do what we need today, we look forward.