I think that it was the WW2 rationing that did it for that gen the sheer joy that you could just buy sugar and eggs and
fruit.
Of course the health nazi's latched onto it's carb content and it was gone but that was IMO a huge mistake as patient's quite simply didn't get enough calories in the appalling food they were served which in turn slowed recovery and effected the immune system.
Shame as well because if you had a difficult patient who was making your life a misery slipping them an extra slice of fruitcake could work wonders
I'm not certain because it was many moons ago but I was told that at some point way back in history fruitcake was considered a wealthy persons cake, another reason it was popular at banquets and weddings
Sounds like a great card to me