The Eagles defense is definitely a tall task for a rookie, and he was not the reason we lost the game, but we also must be objective.
One of the biggest issues is he simply locking into his first read, which is typically underneath. He is also failing to look for the intermediate/deep routes, unless they are curls or back shoulders. If you go to the Depots twitter, you can see GIFs where he totally misses DJ and Claypool (who are wide open) in favor of the checkdown. Some of this can be attributed to rookie growing pains. But some of this is him not trusting his arm (or his arm maybe not being strong enough for tight windows). And as far as I am concerned, having a 5.8 YPA is horrendous even for a rookie. Justin Fields, who also has a poor offense scheme and 0 weapons, managed a 6.9 YPA his rookie year.
But my biggest issue are the turnovers. Coming in people where concerned that the baby hand thing could result in turnovers, and he has down nothing to alleviate that concern (in fact it is now even a bigger concern). Sure his INT didnt matter all that much, but giving the ball away is never good. Said differently, if he had thrown a TD, would we had thrown it out because it was a garbage time TD?