I think that tune will change once the Cowboys are winning and doing so in a fashion that Jerry likes! The real test will be the Eagles right now since they seem to be the team to beat in the NFC-East right now.
Looks like Stephen Jones in an early interview didn't slam that door shut.
On local sports talk radio here in the Dallas area they made a great point about this topic yesterday. Basically, the situation is completely up in the air for now and it will continue to change day by day, week by week. Dak's growing rapport with the team and the offense's performance on Sundays is what will ultimately determine the risk/reward factors that go into making the decision of who to start once Tony is cleared to play. If they keep winning and Dak keeps improving then I can see the coaching staff not wanting to break that momentum. However, if Dak goes 50/50 as the starter and Tony gives the team a potential chance for improvement then I could see the coaching staff wanting to make the change. Guess what, we'll all find out together as we watch the drama unfold.