How is his behavior so far an example of being an "immature shithead" and why do you even care about it outside of him throwing the fucking ball on the field?
Do you even sports, bro? Sports are soap operas for grown men. Everyone has an opinion on the personalities of the big stars in their favourite sports. Every sport has guys marked down as the heroes or villains for the silliest reasons. It's the nature of the entire exercise, fuck it might even be the point of the entire exercise.
One thing it 100% is NOT, is exclusive to Mr. Cam Newton.