We live in a world of micro-analysis. We like to pick things apart down to the finer details and then make general conclusions. But while there is value in looking at every throw, it isn't necessarily a good measure. Josh is a rookie, and he is going to make bad throws... lots of them. But so did every other rookie QB before him. He will continue to learn and develop. McBeane will add more complementary pieces, and we will see more progression as Josh grows with the team being built around him.
He has shown enough flash and ability to make throws that few can make to warrant expectation of a bright future. Picking apart every throw is good for him to do with coaches, to learn from. But for me, I just need to see him progressing and trending upwards... which he is.