Maybe the Tech administration itself has issues if they keep going for those types of characters, then.
Old administration is gone, thankfully. Gerald Myers has done a lot for the University throughout his career but he made some very questionable decisions near the end. Overall Leach was of course an overall positive for the University no matter how the later years turned out (I've said before I wouldn't mind having 2000-2007 Leach back but not 2008-2009), but Bob Knight was basically just hired on the good ol' boy system (longtime friend of Myers', brought excitement but not GREAT results on the court) and his son Pat was basically just hired and kept on as a GOB system favor (which was a bad choice). Tuberville was similar; He didn't have a direct connection to Myers like Knight did, but we didn't really bother with a proper coaching search once his name was in the hat other than failing to moneyhat Briles.
New AD Kirby Hocutt definitely hit a stumbling block with his hiring of Billy Gillispie as head coach of the basketball team, as his flameout would likely have shone brighter than anybody's if anybody gave a crap about TTU basketball, but in his defense that was mostly done before he got hired and the fact that he officially hired him in his first week or two of employment was almost more symbolic than anything. His other hires (Tadlock as baseball coach, Kingsbury as football coach) are both pretty exciting because they're at least known quantities on the personality front; Kingsbury for obvious reasons and Tadlock because he was also a player at Tech and he was an assistant at Tech for a while before he got hired as HC. Can't be dismissed that Hocutt was at Miami while all the crap with illegal benefits was going down, though.
Honestly I don't think Kingsbury is as 100% gung ho "I'm staying here for the rest of my career" as a lot of Tech fans seem to think he is; I think with a lot of success he could be gone as early as 3 or so years from now but between his relationship with the University and his assistant's relationships with the University at least we know they're not going to try to intentionally screw us over like Tuberville did.
Or Lubbock is home to an unspeakable ancient evil that gradually transforms its citizens into wretched caricatures of what they always aspired to be
The transformation is less about
actual unspeakable ancient evils and more about dust storms eroding your physical form into something eldritch and terrifying.