Well sure, but I did address that separately. "3: The first part is just false, sandboxes can surprise anyone. 'Narrative twist' requires an established narrative, so that's, again, 'Who likes dogs? They only bark, they never meow.' "
If it were simply a desire for novelty and surprise, then that's entirely reasonable, but is really just a request for better quality. That is, a well-constructed sandbox should not be "empty". The clear implication from the statement was that it should be a "narrative twist", which requires a narrative, much like the other complaints (e.g. about an unsatisfying "endgame").