There have been a number of QB's through the years that weren't the sharpest tools in the shed. Guys like Dan Marino and Terry Bradshaw just to name two.
Do you think they never audibled? Or do you think someone took the time to teach them the ins and outs so they could be successful?
We aren't asking Cam to perform open heart surgery. If he is deficient in reading defenses (and I don't think he is any worse in this area than typical 2nd year QB's) then damn it teach him to read defenses. Don't just say, ok, we just will do it for him. That won't work.
We are mixing the use of dumb/stupid a bit. I do not think Cam is a smart person, but I think he is more unntelligent as a football player. I am referring to a "sense" or "feel" but there is some intelligence behind it too. However, this coaching staff dubbed themselves as teachers, something I see no evidence of at all, so I see your point. Would Cam prosper under Harbaugh? Maybe not, because Luck and Alex Smith are very smart. However, Kaepernick is a lot like Cam, and he is doing OK. Who knows, but we are going to find out.
If I have Cam, I hire a coach who has a record of getting the most out of QBs. When I think of Bill Cowher and his success with Stewart, Maddox, Ben--I have to think he gets it.
My first choice, however, is Kelly from Oregon.
I am not sure these guys make QBs better, but they make everyone around the Qb lift the QB's game.