This statement does not make much sense to me. In VR everything is at the same focal distance, you just fake perspective/parallax/size/stereovision to make it f

This statement does not make much sense to me. In VR everything is at the same focal distance, you just fake perspective/parallax/size/stereovision to make it feel 3D. You can not change the focal distance if you just have a screen and fixed lenses. Even actuated lenses would not be enough as they will change the focal distance for the entire scene. "Perceived distance/depth" has little to do with "focal distance" in this situation.