I know what you are saying and to a certain point can agree. You look at the way Daboll offenses sputter over his past time as an OC, you look at a QB coach that is known more for WRs. A defensive mindes HC. It's tough to see that group being successful with a project QB.
That said, we dont know how well they coach. We aren't in the QB room. At practice. They may do well. Time Will tell.