Disagree here Jrry.
Pouting is immaturity from an entitled, spoiled brat.
We're not talking about a confidence a professional ego should be exhibiting.
He needs to earn his spot and give his 52 other teammates what they deserve. A proffesional, fighting attitude.
Sometimes men have to be held accountable for their own actions. Not everything is on the coach. I certainly wouldn't expect the coaching staff to coddle him.
A good team leader does have to have to navigate, harness, and direct people though.
Professionalism comes in many forms. And no one employee is exclusively enslaved to one fixed mental state.
At work I find that I swing between 3 mental states:
1) I love my job.
2) I hate my job.
3) It's just a job.
At some point, a worker is going to be in 1 of those 3 boats when they embark on the whole "making a living' thing.
If the % slips into the bottom 2 categories too often, it is time to ask yourself if you are in the right career.
But at the end of the day, I'm glad there isn't a camera in my face when I'm in the "I hate my job" moments.
Most passionate people will vent when work is "off the rails".
Sure, maturity plays a bit into the experience seasoned vets have over new-comers.
Bitching too much at work is not constructive, especially when it's to the point where the employee is a negative influence.
Bitching too much at home isn't always healthy either. The wife, the kids, the dog...they don't deserve to be inundated with "how bad your day was".
Find a way to vent. Find a way to get through the bad days and realize the good days are around the corner.
A good team lead can recognize the difference between systemic negativity and a passionate employee is venting.
A good leader will lead young men who don't have the life experience in the work force to be seasoned.
I don't think pouting is exclusive to entitled spoiled brats.
People with great work ethics who earned everything they got can get spun up too. I know I do.