I'm just going to throw this out there...
McNair has been in there with Kubiak and Smith (and Wade, for that matter) and he's seen which of these guys stood up and pounded the table for each of the guys we've drafted. We haven't.
If Smith and his scouts preferred some other guys but Kubiak and the other coaches chose guys that weren't as successful, McNair would know that Rick deserves to be heard on this issues... or not. If it was Smith who chose these guys to get the talent in here and then Kubiak was let go because he didn't utilize it right, that's one thing. If Smith's players are the ones who are the stars in the league and the one Kubiak and his crew are the ones who have crapped out, then that's another.
It might be that Kubiak made the call to let guys like Brisiel, Winston, Dreessen, Demeco, Leach, etc. go and Smith might have questioned him on those decisions.
There are lots of ways that Smith could have proved to McNair that he needs more power in personnel decisions.
We haven't been in those rooms. At least, I haven't. So I don't know what the heck is going on in there and which guy has made the right choices and which guy has made the wrong ones.