Um...mokay....
In the context of the OP, that is not the type of RPO to which Gruden and Goff were referring. It was pretty clear that the decision was not a pre-snap RPO but a post snap RPO where Goff would read what the LB did POST snap. If he was playing pass and backing off, Goff handed the ball off. If the LB stayed in the box, he pulled it out of the RBs stomach and threw the ball.
What you and in this case McVay are referring to is a pre-snap read. Goff saw man coverage on Kupp and Watkins and new the call was pass based on the fact that there was no way the defender could cover the trailer in one yard. That was not based on what the defense did but how they were lined up.
Exactly. There are different versions of RPOs but the one Gruden and Goff were talking about being run at Cal was after Goff saw what the defense actually did post snap - not how they were lined up pre-snap. I thought Goff made that very clear.
I don't think we are going to see Goff running many RPOs like Wentz, Craperdink, and Newton run. In that case it is more of a QB option where the QB can keep it or option it off or even pass it. That is a much slower developing play and relies on a QB that will run the ball more than Goff will ever be used in that role. We will no doubt use that type of RPO but it will be extremely limited to likely once every two or three games.