I genuinely don't understand what the purpose of the
>Kris refuses to be fed actual food by the soul
shit is. I assume there must be a reason, but I really don't get it. We know dark world food isn't actually real so us eating TV dinners etc in that world makes sense.
But outside of very specific instances (Kris being forcefed church juice and being able to drink Alphys' juice), Kris never ever eats or drinks unless he doesn't have the soul, and when the soul is in, he only eats when "our" eyes are closed (black screen). We are never given the option to eat anything in the light world either
This happpens way too consistently to the point that there has to be reasoning for it.
Even Gerson seemed to be aware of those restrictions, and sees nothing wrong with Asriel holding an apple up to Kris' mouth like he's feeding a blind donkey.

I really just don't get it at all.