If it were a complete rupture proximal, at the shoulder, they wouldnt do anything. That is how folks get the "Popeye" biceps, they dont even re attach it.
But the elbow...damn
You are spot on,and its Josh's biggest issue still.
Josh doesnt throw with anticipation, he also needs WR to be more open to throw the ball. He had also bailed on pockets he didnt need to and had guys open he didnt see all season.