I am not saying your are not right about how you feel about BF. But, there is a huge difference between what fans think is reality and what KF thinks is reality. I doubt he is nearly as down on his son's performance as you are. At best, KF probably just thinks that BF needs a year or two to rehab his image with a good QB. Not saying I agree with that, but my opinion aint worth shit here, nor any other fans.
As for the other coaches, come on. If any of them are coaching at Iowa because they think they will be named the next HC, they are chasing a straight with a 3 and a 6 in their hand. Rarely does a coach retire and things end so well that a member of the staff just gets to takes over, whether it is BF or anyone. And, often times when a coach in waiting is named to replace a legend, that guy often is plucked away before it actually happens. Naming a coach in waiting is aspirational, not a commitment.