Rather one should ask "Would you be able to answer any question and fulfill any request about the Grand Canyon given to you by others in a way that will be indistinguishable from someone who has been to the Grand Canyon"
Also, you touched on how even modern tech still falls short of the true experience. Just look at the history of motion picture since the early 1900s. We have added sound, color, bigger screens, faster refresh rates, more pixels, 3D (sort of), surround sound, spatial audio, IMAX, etc. Almost seems like video leaves a lot to be desired.