No one has yet commented (that I have seen) on the new cold meals for gluten free or wheat free passengers. It is probable that special meals of this type would be salads. But if one is truly taking a long trip, salads at each meal just don't cut it. Look at a train like the Lake Shore Limited. An end-point to end-point ride involves numerous meals and an all-salad menu doesn't sound appetizing. And what if this menu was implemented on multi-day western trains? That could kill the deal as far as long distance travel.
Many of us have spouses with whom we take train trips. I've taken my wife along for years and she has always enjoyed the dining car experience. If that is gone, it will be difficult for me to get her on a train.
The Lake Shore Limited, and for the most the part, the Capitol, only serve two meals. So if any trains are to get this menu, I'm pretty glad it's those. That said, this menu is pretty much unacceptable for passengers with dietary restrictions. As I've said multiple times, if you don't eat meat you will not have any choice when you order. The gluten free selection is also pretty limited, but I feel like it could be worse.