We've all seen men like Kirk. Our fathers, grandfathers, the old guy that lives next door, etc...
He was open to change back in Spring 2015. He was forced into it but he listened and adjusted and he had a revival.
Now he's just cold and closed. He's frustrated and nearly 70 year old. He doesn't get why people don't see things the way he sees it. He's just a play here or a turnover there away. If given the opportunity after this 2023 season, he absolutely would bring Brian back again as the OC because he truly believes that this is all due to bad luck and injuries.
This is why this had to be done and be done now. He wasn't going to accept it being done before the bowl game, and in 2023 if you wait until after the bowl game with the transfer portal and hirings you are fucked.