Is Bryce the only problem? Obviously not, but as the QB--you know, the most important position in all of team sports--It starts with him. No, not every pass attempt was a jailbreak by the defense. He couldn't do anything even with the snaps where he had some time.
The same OL that did some good in run blocking fell flat on their face blocking on almost every passing play.
The offense sucks, Bryce included.
You can blame 1 player as the sole source all you want but you are wrong.