Wait what they said "more food is used at higher levels"?
Experienced heroes eat more? Eh?
They said it will take more resources over time, more specifically , but I guess making sense or not will depend on implementation a lot.
Maybe it's related to how many NPCs, animals, etc will be at your camp more than anything else.
if it's some sort of level scaling as in "Level 5 characters will consume five time more food" I'm ready to call the entire idea bullshit, by the way.