The primary challenges facing UK are structural. Firing a coach or AD will not solve them. It'll require heavy investments over several years to get UK to a point of sustained success in football. I'm not sure most UK fans are willing to spend what it will take to become a program capable of regularly contending for SEC titles. I just don't. I see too much complaining when ticket prices go up.
I don't think it's any surprise that if over a period of years you look at football revenues, booster donations, ticket prices, etc. by SEC school, the rankings will generally match how the schools performed on the field.
If UK fans want that kind of program, then we're going to have to pay for it. And there's no sense complaining about it or the apparent lack of results. Unfortunately, it costs more to get there, especially when playing catch up, than it does to stay there.
As far as Mitch and Stoops are concerned, I understand the angst over Saturday's game. That was as big of a gut punch as I can remember. However, they have also managed to secure $156 M in funding for facility upgrades during a down period and while hamstrung by a budget process that required the Athletics Department to pony up an additional $60 M or so for academics upgrades. That is a tremendous accomplishment that addresses some of these issues, but you're not going to see results from that overnight.