I think people read too much into these promises, most for internet chatter than actual coach promises to a player. Both QBs were young and inexperienced. We saw Sorsby with Deer in headlights last year and not great early this year. On this board, it seemed split who should start, even after early games.
I think Sorsby just started to thrive with more playing time, but his early play didn't really foreshadow his recent play, which is definitely elevated.
Now, we'll see if Tayven stays? What we do with Williams healthy next year? Do all three stay? Hopefully they all stay or at least two of them, always need a reliable backup.