There is a lot of general frustration with Cal across all levels of fandom in Kentucky. If you remember, early in the season, I said I wouldn't be shocked if he just up and quit after this season, either into retirement or for one more shot at the NBA. He just looks defeated, honestly. But it's hard to walk away from that money.
It was a mistake to give him a lifetime contract. His buyout is currently $52 million, so firing him is not an option. His results across the last 7 seasons are not what UK fans expect. Zero Final 4s since 2015 is the second longest drought in the last 30 years despite having a bevy of talent to do it.
Most fans, which I predicted when they hired him and his adopted 1AD method of recruiting, have grown tired of mercenary basketball. Most excused it at first with all the talent, the title in 2012, and the multiple F4s in the first half of his tenure. But UK fans always cherished the idea of investing in the lives/careers of their players over 3-4 years, and the constant roster turnover absent the high-level success has worn thin on many.
Lastly, he and Mitch Barnhart don't care much for each other. Barnhart expressed his extreme disappointment in Kentucky's end to the season, and made it clear that the level of expectation is much higher than this year’s result, and the recent results of past seasons. Again, though, Cal holds all the cards unless Barnhart has the keys to Ft. Knox. NIL will help UK because they have fans with money just dying to give it away to these kids. The question remains whether Cal can take advantage and get them over the hump, and how badly he still wants to.