I'm really not sure why he is still employed at this point, you are 1000000% correct. I just finished reading this article
https://thedraftnetwork.com/articles/rosen-to-murray--how-cardinals-got-here-amidst-crazy-offseason
In Arizona’s mind, Murray has always been an exciting prospect. That’s obvious hearing Kingsbury talk about Murray. He likes him (he also likes Rosen a lot, by the way). Owner Michael Bidwill likes him a lot, and especially likes the idea that Murray's exhilarating style of play will put fans back in the seats, something that was an issue last year as a losing campaign endured. At no. 1 overall, the Cardinals primary motivation was to trade back in the draft, but if that didn’t work out, there was no harm in the truth that they liked Murray getting out anyway. So nothing to lose by ramping up the rumors and seeing what happened.
Still, when Kingsbury affirmed their belief in Rosen on February 12th, he wasn’t lying. The Cardinals were all in on Rosen at that time, per multiple league sources. Over time however, a few things changed. Rosen is of course not required to be at the facility this offseason, but Carson Palmer basically lived there, and Rosen hasn’t been there at all. He has yet to meet Kingsbury in person, although the two have spoken on the phone a few times.
Still, one motivation has trumped all. There is increasing pressure from ownership in Arizona to make a move that will be perceived as a splash, even to the point of rendering null their first round franchise quarterback from a year ago. It is no secret that Bidwill has always been a very hands-on owner, and this situation has brought that into focus more than ever before. It's not fair to say Arizona's decision-makers are divided on the prospect of drafting Murray, but Bidwill has been a late-driving force behind their interest in the Oklahoma quarterback.