It's not about anyone's ego. Since the new CBA was implemented in 2011, there's no more 2 a day practices, and there is a time limit on the length of time a practice can run. Reps are at a premium. If you have an all out competition, reps are split and chemistry suffers. Smith is healthy and has been reportedly doing a good job this offseason. Fitzpatrick won't see real action until late July. IMO, this announcement was a no brainer. Fitzpatrick already has plenty of reps in this offense and would be prepared to take over if necessary. Also, when I say quick hook, I mean Bowles isn't going to be married to Smith the way Rex was to Sanchez. I think the coaching staff believes that with Smith's arm talent/athleticism, the offense can reach it's full potential and they want to see it play out.