See, I don't think Lynn was a placeholder. I think they genuinely thought he was their guy. It just didn't work out. & I'm sure they weren't waiting on Staley.
Same thing with Culley. They didn't give him a 5 year deal expecting to can him after two, or three. He'll have every opportunity to play out his contract.
With that said, I hope they fire him after two, or three if he doesn't deliver what they expect, like Lynn. Or whenever the circus gets out of hand, like Myer.
That would be different from business as usual on Kirby, where the HC can underperform for 4 years & get a promotion.