Actually it looks more like a crap food selection, sure you get mashed potatoes, but corned beef? Thats like a Princess cruise offering grilled spam. Those foods are preserved foods, loaded with salt, probably because of minimal refrigeration back then.
“probably because of minimal refrigeration back then.”
Yes, and so you should consider that and give them a pass.
Maybe they just had better “taste” overall back then, not just hoity-toy.