I wouldn't say it's entirely fallacious. Of course money is a big factor, of course we made the decision to pay the bonus, but that doesn't (and shouldn't) mean that he's a lock on our roster.
Money usually (wrongly) forces people into unoptimal decisions, and unfortunately this sort of surreality is the times we live in. But that doesn't mean it is a lock.
One could argue that we also drafted a strong armed QB. A laser armed QB. We did so AFTER paying Kolb his bonus, which one might guess may mean the staff isn't putting all their eggs in the three other baskets we have.
Finally it IS something THIS staff has done before. We thought highly of Skelton (the rookie) and didn't want to risk him on waivers to PS. So we didn't. Maybe we could of cut another QB, but what we DID was cut Leinart.
So I'm not going to sit here and say Kolb is a lock for the final 53. I see him as making it, but I won't say he is a lock. Maybe by injury, maybe by threat of injury, maybe by ineffectiveness in the preseason, maybe by what they see in Lindley, Skelton, Bartel or some combination of all of that.
Thus as astutely pointed out, if for any other reason, I'd rather have the guy standing up as well.
We can definitely say that money DIDN'T COST us Kevin Kolb since we paid the bonus, but we're still a few months away from seeing whether or not the COST KEEPS Kolb on the roster. I hope they do the best thing for the team whatever it is. I have an idea, but it's a process that they're going to play out and cross that bridge when they come to it.
Personally I'd rather have Skelton getting all the 1st team reps to prepare him best for what I see as the inevitable.