A quick look at the PJM interconnect data would disagree with you. About a quarter of the live power is coal.
https://www.pjm.com/markets-and-operations.aspx
That serves 65+ Million people in the north east and is keeping them from dying of cold this past week, including today (Temp outside in the mid-hudson valley is 15F / -9C), and overnight will be 8F / -13C).
Just for context - electricity somehow powers everything in most homes. Your oil or propane furnace needs a power hookup to ignite.
We shouldn't get rid of coal without having something to replace it (ideally nuclear/solar/wind, but realistically probably gas), but I think the point was just that nobody would build a new coal plant today or keep them running for longer than they need to. They're inefficient and fairly expensive.