The thing to remember about uncanny valley is that it is a valley, and once you cross through you will start rising up again to the next peak. That, is where peaceful bliss awaits, where technology works so perfectly it is no longer unsettling or scary. That is the goal, and that is where we are heading more and more. The uncanny valley will soon be behind us.
I don' know so much about valleys and such. I just think about how people rely on visual and audio evidence and how we might reach a place where it can be hard to guarantee that we are not being manipulated with doctored materials. This may ultimately be the utility of any kind of technology that documents all steps in processing from camera capture on. (erm blockchain?)