You have a valid question so let me answer it in two parts...

In team sports(football) the decisions are made by coaches and team management...so use of this device is the decision of player...

In individual sports(like tennis or squash etc.) player can use this device to identify their shortcomings scientifically and make adequate adjustment...

This device is tracking system meant to identify and improve not to penalize some player...

In professional sports everything works in a professional way, no room for personal feelings and biased decisions.
Hope you got the answer!!!