By that argument aren't the controllers experiencing more latency on RiftS than Quest already? I realize there is more post-processing with hand tracking, but given that it already experiences the latency of having to process the control actions... not really sure how this could affect it that much.
Also, you could argue the hand tracking calculations could be done faster on a PC, so even if there is some perceived latency it could balance out or be better... would really need numbers for all of this, but it does just seem very suspect that they are trying to push more things on the Quest intentionally..