Multiple posters have also agreed with me. Your failure to understand what I'm saying does not mean my logic is flawed. There are a ton of hypothetical situations that could be at play, you are correct. Occam's razor says its a practice thing. You are correct, I can't absolutely confirm that. Then again, I can't absolutely confirm that bigfoot doesn't exist either. People are getting bent out of shape because they think I'm saying Rakell has a character flaw, and I've never said or implied that. I made a factual statement that over the course of his life, he hasn't practiced enough to be better than he is. Literally the only way that is an incorrect statement is if he CANNOT be any better than he is right now, and that's a far more unsupportable statement than anything I've said.
I'm going to speak in absolutes because the idea that he's topped out at his age is pretty ludicrous for someone multiple coaches have decided is a center, and the fact that he has only that one move. He should have many. He should mix them up. He should occasionally tie the other center up so his wingers CAN help him. He's not injured in a fashion that restricts him to that one move or he would have been rested at some point during the season. His wingers aren't forcing him to that one move (and he is typically beat cleanly regardless, so they're irrelevant). If it's his best move, that pretty much speaks to my point that he hasn't practiced enough - it's a horrible move in many of the situations he uses it, and there's a word for forwards who are horrible at faceoffs - "wing".
I am of the opinion that anyone can improve anything with practice. The truly gifted can do more with less practice, but it is possible for someone less innately gifted to be better than someone who is if they outwork them in practice. And I don't believe that anyone can't improve at all. I do believe that most people do not practice at the level of intensity required to be the best in their field, and that most people with a good amount of talent usually don't apply themselves 100% - because they don't have to. I include myself in that assessment. That doesn't mean that they get a free pass for not working as hard as the guy who isn't nearly as blessed but actually does apply themselves to their maximum potential. You may disagree with your world view, and that's your right.