Absolutely. The force to strip and load a new round, and lock the bolt, is much greater than the force needed to shove an empty brass case against a stack of empty cases.
And as I said, there is a flap that the empty brass passes through to prevent the brass from sliding back and jamming the bolt mechanism.
I’m thinking if an ejected (A)round could slide back and the next ejection(B) would be under the previous one(A).