The way I see it, moving on from Dak will put more pressure on the front office to win a Super Bowl soon after his departure. If Dak was truly the one holding this franchise back for all of these years, then we as Cowboys fans shouldn't have to wait a prolonged or extended period of time before we see the Cowboys winning their sixth Super Bowl post Dak era. Any period which extends beyond 5 years or close to another decade without another Super Bowl win, means that the front office is still the major issue and will continue to be no matter who the QB of the team is.
The front office has gotten some of the fanbase on their side by believing that they are about to move on from Dak. But those fans will quickly sour against them if the Cowboys move on to other QBs and still keeps failing at the goal of winning another Super Bowl.