I think most “dedicated” rail cars are owned by the customer, not the RR.
You are correct. I picked up on the story from a rail industry forum site that mentioned this and that the cutbacks would be on motive power. I have regained my childhood interest in railroads since my four year old grandson started taking me to the local depot to watch trains.
I read a few months ago that there was a move to require water spray systems on rail cars to reduce coal dust.