Suppose Iceland were to win the World Cup. Would people be saying that Iceland had spent a bunch of effort training players, or would they be saying that it's natural for different teams to win, and that it had to happen eventually?
One major issue is that probability and statistics are very far down the pecking order of what is considered part of a good education. A huge number of people think "it varies randomly" means the same as "there's no way to know any more".
People would be saying both and they would all be right. It takes both luck and training to win.