I think it's pretty delusional to believe Campbell is a large part of the Redskins' problems.
I was in Cincy for the game and sat up high for the 1st quarter with my trusty Canon. Snapped wide-angle shots on just about every pass attempt - just like the coaches see. It was shocking to see actual evidence of what I have suspected all along: JC cannot process information on where to go with the ball. He just can't. So that causes him to hold the ball too long. I think it's delusional to believe he is not a problem. Look, he's had what? 40 starts? At what point do you think he'll "get it?"
I defy you to show me a QB who has found success after showing so little for such an extended period of time.
Just off the top of my head, here are three: Dan Fouts; Rich Gannon; Vinnie Testaverde. It didn't take Drew Brees 40 starts, but he was pretty awful for his first two years (in the same system) and lots of people had written him off, including his own team which drafted Rivers. Eli, this time a year ago, had some questioning whether the Giants should go in another direction at QB. Kurt Warner's another one, though his 40 starts came in a mix of the NFL, NFL Europe and the Arena league.
There are plenty of other examples of QB's who showed modest promise early on and who matured over time into good and even very good QB's as well. Kerry Collins is such an example. So are Trent Green and Matt Hasselbeck.
I'm convinced that there is no more demanding position/occupation in professional sports than playing QB in the NFL. Perhaps individual skills are more challenging here and there, but the physical, mental and emotional burden on NFL QB's is not matched anywhere else IMHO. We seem to ignore that when we talk about QB "busts", because I think some QB's just take a little longer than others. Any other position, I grant you, and 40 starts is more than enough to say definitively whether a player "has it" or doesn't, but with the QB, it's different or can be. Unfortunately, the demands of the salary cap and the win-now attitude of fans rarely affords QB's the luxury of working all the way through their learning curves. Campbell is frustrating because we still can't say definitively that he's going to ultimately be known as a good, average or bad QB, but that goes with the territory.
The bottom line is that it's not like the team is one QB away from being a Super Bowl champion. I say address the other issues and see if those improvements don't help Campbell over the hump. I suspect we haven't seen his best football yet, though I don't know exactly what that means.