This is a fair point. I'm glad Canales is also adaptable in his decision-making. Miles Sanders convinced him to run the ball on first and goal against Atlanta, and it resulted in the walk-off TD. If it's a pass, sure, there's every chance Young ends up running it in -- but there's also the greater possibility of a holding penalty or a turnover.
It wasn't a smart call at first, but his relenting was wise and it showed a quality few NFL coaches have: the willingness to consider their first opinion isn't the gospel.