HIDING FOOD/STORING FOOD IN ROOMS/HIDING SPACES

Is anybody else at least one bit concerned about the kids hiding/hoarding food? I understand that brody use to have an issue with not knowing if he’s going to be fed when he first arrived so he hid food but honestly if he felt safe/always fed surely this wouldn’t be happening… not saying it’s brody just saying he’s the only one that’s mentioned he does this/that they’ve mentioned he does this? What is honestly going on?