Its almost always results oriented analysis when evaluating stuff like this....
Take the 1989 Super Bowl against the Cincinnati Bengals. The San Francisco 49ers were down by three points with 3:20 left when Montana spotted -- no, not an open receiver -- but a personality. "There, in the stands, standing near the exit ramp," Montana said to tackle Harris Barton. "Isn't that John Candy?" And then he led the 49ers 92 yards, throwing for the winning touchdown with 34 seconds left.
Because Joe Montana wins a lot of games, hes "so cool under pressure" when he does stuff like this.But now imagine if this same story came out about Tony Romo after one of his late game fails....everyone would be saying "OMG, he cares more about some random celebrity in the stands than his team!!!"
Or consider how Magic Johnson was praised for his "love of the game" because he was constantly smiling and "having fun out there." But when Lebron James was doing the same thing but didn't win any titles it was all "He doesn't take the game seriously enough."
Bottom line: When you win, people are going to look at your personality and come up with narratives that explain why your personality is conducive to winning; When you lose people are going to look at your personality and come up with narratives that explain why your personality is conducive to losing. In reality, talent and skill matter a ton more though.
I do think Steve Smith/other teammates calling him out is the best point against Cam. Its very possible that he is a NORMAL young player who will mature over time. But all of this "OMG, he'll never learn...hes going to be just like ________(insert QB here who has not won a title so people find a reason to bash his personality as if that were a major cause)" is over the top.