So what? I could present the theory that Gary Kubiak is a fan of Richard Hoagland, and hyperdimensional physics proves that the Texans should have a defensive coordinator with a four letter last name. Just because "you don't know for sure that my theory isn't true" doesn't make it any more likely.
As far as I'm concerned, giving credence to theories based on nothing more than conjecture to prove a point is asking for more gullibility than believing Kubiak picked his staff. Kubiak wielded a lot of power when he signed up here. That is based on observations of what went on at the time, not a belief that it would be impossible for Kubiak to pick a bad coach.
Alex Gibbs was hired well after the 1st season. I view that as a Kubiak hire vs. the Sherman hire which smacked of McNair sending a signal that a veteran head coach, with a solid track record, was watching very closely...which then saw the dueling (or perhaps "hybrid") Green Bay run game and Denver run game switching out every other play on the field, precipitating and necessitating the Gibbs hire which was more in line with what Kubiak had probably envisioned since that's what he knows the most.
He even brought in Shanahan Jr. as a wide receivers coach, which I think was a clever strategic move by Kubiak. Get the kid on staff, wait out the forced hirings, and then promote the kid to the OC spot.
Little by little, you can see the changes being made. Why? Why would these little things fall like dominoes? Why wouldn't Shanahan Jr. be brought in immediately as OC once Kubiak got the HC gig in Houston? What the hell is Mike Sherman even doing in Houston in the first place, if not to be that veteran Big Brother making sure that McNair has an eye and an ear on what Kubiak is doing all the time? Then, like a magician's puff of smoke, Sherman is gone. Why? Because he was only there for the simplest of reasons: A Dan Reeves'esque consultant role. Once things started to take shape, he was out of there and onto a HC job. There was no long-term reason for Sherman to be in Houston.
You think that McNair is just going to hand the keys to the team after 2-14? McNair is a shrewd businessman whose franchise remains one of the most profitable franchises in sports today. He operates in black ink, never in red. I don't see Bob McNair, as you have claimed, just rushing Kubiak onto the front lines and saying "Anything you want, it would be my pleasure!"
Gary Kubiak had zero HC experience. Hell, it wouldn't surprise me if McNair wanted him more for his skills with helping QBs mature and produce on the field (hello, David Carr reclamation project!) than for the vast HC experience that Kubiak didn't possess.
Was Kubiak the big choice for McNair? Yes. Was he given everything he wanted from the beginning? I highly doubt it. But now, it looks like McNair has been won over. Big time. We've got David Gibbs on staff, Bush was promoted (an obvious Kubiak choice, by far), and now we're talking playoffs with a r-e-a-l chance of it for a change.
Again: Until a tell-all book is written (which it won't be), nobody can say for sure what went down. I can say this: The Texans organization is a tight-lipped and secretive organization as it relates to personnel moves, so it should come as no surprise that we'd never know that Gary did, or didn't, have full reign in that first wave of staff hirings.