From the article:
You know, there comes a point in every Master of entertainment's life where somehow, even though they thought otherwise, the times have left them behind. Their ability to entertain has waned. Those who were at the cutting edge, the forefront of it all are all of a sudden, just... Old. However, even though he is in his mid fifties, and to some appears to have lost a step, Shigeru Miyamoto is still at the top of his game.