He's the quintessential old school megalomaniac P.O.S Coach, cut from the same cloth as Bobby Knight.
Great Coach who understands the X's & O's of the game like the back of his hand & can win with minimal amount of talent, but an absolute Dictator who over time wears out his welcome because he becomes abusive with his power.
That's what makes guys like Larra, Roy Williams, John Thompson, Kelvin Sampson etc such gems, because during their careers they could've easily made that turn to the Darkside given how great they were & how much autonomy they earned, but they remained true to their core values & never misused their status.
I always have the utmost respect for long tenured Coaches who are still Good people regardless of their success, because the business is chock-full of borderline narcissists & guys who are just downright ********.