Part of Cambage's issue is that she doesn't seem like a great teammate. I've seen her live on a couple of occasions, and her body language is worse than any professional athlete I've ever seen. Someone should try the Jeff Walz "film her and show her just how bad it is" tactic because if I were a teammate of hers, I'd despise playing with her. Yes, when you're 6'8" and have good post position, you should get the ball, but being shown up every time you don't get it to her would get old fast. Maturity may come with age, but then again, maybe it won't. I think you know what you're getting with Griner, and I sign up for that every time and twice on Sundays if I have the opportunity to add her to my team.
I don't think you have enough "inside" knowledge of her or the teams she plays on to make that statement. Your assessment of her body language isn't a science. I've also seen her look like she's having a hell of good time on the court. So which is it?