How much film have you watched of Goff? I'm being serious here. Plenty of time to throw? The guy throws under pressure all the time! It's his biggest strength! His O-line was notoriously bad at Cal and he took that program from 1-11 to 8-5. Also the shotgun vs under center thing is blown out of proportion and has been for a long time.
I watched a few Cal game highlights this year, and counted seconds from snap to a throw...Most were 2 seconds or less (that I saw). He threw one pretty pass 34 yards in the air to a WR in stride, and the play went about 70 yards total, and this "count" was right at 3 seconds, Dude gets it out fast and accurate, and doesn't lock onto WR's before chucking it...