To be fair, if he thought of Murray the way that the negative Nancy’s on this board do, then there’s a good chance he wouldn’t have taken the job. But he did see Murray have a hand or leg in 5 touchdowns in the 2021 opener & KNOWS that Murray is as talented as any QB in the NFL. The thought of what Murray could be like if the previous regime did their job & surrounded him with talent & protection was too much for him to say no to.
There were only 2 GM jobs open and either he didn't want to wait on an answer for TEN or didn't like what he saw for the future of the Titans or just wanted a change of scenery. Either way, he took the promotion and sometimes you take it regardless.
I think he was given the keys past Kyler (assuming he doesn't royally mess it up) so he could build the team his way since he inherited this mess (Mike looking long term). Yes, he might still like Kyler and of course has to publicly support him, but I am sure he didn't take this because of Kyler. He's young and has a possible long future here which could easily surpass Kyler being in the picture.
Kyler has shown flashes in 4 years. Any young great/elite QB has shown as much or more in the same amount of time. He's still behind his peers. Yes Keim, Mike, and Kliff, but that only goes so far. We can excuse his first year, maybe even his second. But his third? Fourth? Can he ever stay healthy even if he happened to become Mahomes?
He had 1 good year in college prior (forget high school) not much track record to go off of. His physical talent only goes so far, and it hasn't been enough. Questionable he can take it to the next level, but not impossible I don't think.
Because of that the team shouldn't "build around him" and not depend on him playing hero, because he's not, not for an entire season and playoff run anyway. Build solid defense and safe play/RB scheme and then he can go super hero mode in small doses. Basically the 49er way but with style.