Some reviewers have talked about itI never heard that from Sony. What you're saying makes sense, I just never heard it.
I can't imagine it would be impossible since the Galaxy phone doesn't need a camera to track your movement. (Even though the phones have a gyroscope so thats different).
If what you're saying is accurate I wonder how far back can you look? (Or if it would really make a difference.)
The headset has a gyroscope, but the camera helps with tracking and you need it for the move controllers, so when you turn around you lose the effectiveness of the camera and jankyness ensues.