One objection observes that when a grave is opened, the deceased may appear still and without familiar signs of life; cries or marks of punishment are not necessarily visible. The absence of such signs is taken to deny punishment.
The response highlights limits of sensory access. It has not been established that every real condition, especially one in the unseen intermediate realm, must be perceptible to every observer at every moment.
It is one thing to say ordinary inspection does not reveal the barzakh state; it is another to claim that the state cannot exist. The first does not logically entail the second.