Not good at all, neither is the question.
No player has to beg out of a game. The team doctor and trainer make that call. Athletes, ALL no matter what sport, what conference are encouraged to report issues. Players don't have to fake anything if they need a rest. Most coaches pick up on it anyway.
You should use your sons situation to understand what happens when you don't take care of injuries. The sooner it's addressed, the sooner the player is back on the field.
I am really surprised at you.