The question is fit.
Not all coaching styles play out the same at all locations. He's a rah rah players coach kind of in the vein of Pete Carroll. Not a strong disciplinarian type of field general. That won't work at every school. It has served him well at Sioux Falls, Fresno, and now at UW. His culture has worked in those cities.
We have also been a tad leary of his recruiting chops thus far. Willing to give him the benefit of the doubt and time to see how it goes, but he hasn't yet done anything major that way. He can't live long-term out of the portal to cover holes and expect to be 10+ a year threat in wins every season.
That last bit is the only thing that made me feel uneasy about giving him 9m/year as the rumors were floating on as it is. At least not for a 5yr+ kind of long term contract. He's got more to prove IMO.