I agree with you. The uncanny valley refers to rendering human actors only. It is not necessary to render a whole movie from scratch. It is much more work, but only work.
IMO, The Life of Benjamin Button was the first movie that managed to cross the valley.
I would like to propose this as a thread for people to write in their predictions for the next year and the next decade, when practical with probabilities attached. I'll probably make some in the comments.