There was NOTHING... Absolutely NOTHING... when Fulmer was finally pushed out that suggested things were turning around, that he understood how to turn it around, or that he even fully accepted that anything had to be turned around. He was full well committed to driving UT even further in the hole.
What has been seen since is typical. Not fun. But typical.
UT will struggle until they find the right coach. It will be an ELITE, not "good", HC that can recruit, discipline the program, develop talent, and get it done on gameday. That may be Jones or it may take another change. The one thing UT cannot do is the very thing you advocate... tolerate low or ambiguous standards for its HC and program.
You don't by chance work for the federal gov't do you? That's about the only place someone can "succeed" while embracing mediocrity.