Shigeru Miyamoto's contribution to gaming is ENORMOUS. The influence of his 1980s' and 1990s' designs constitutes a paradigm for game designers around the world.
That said, he is also overrated. Yes: overrated.
People in the West in particular like to view him as that mastermind who more or less single-handledly created all those games from Donkey Kong to Pikmin 3.
But he didn't.
Starting as early as around the launch of the Super Famicom (SNES), Shigeru Miyamoto more and more withdrew from the actual creative process, assuming more and more of a producing, then merely supervising position.
For example: Super Mario World.
Commonly regarded as one of the greatest, first league Nintendo classics, and yet: who here can say right off-the-bat who was responsible for its design or who even directed it?
No, it wasn't Shigeru Miyamoto.
And the same goes for many other great Nintendo classics.
Miyamoto IS the “father” of Mario and Zelda and Metroid. He shaped Nintendo's handwriting for many years and throughout what many view as their creative zenith in the late 80s and early 90s. But that be-all-end-all “Master CPU” right at the hub of all of Nintendo's creative efforts? That he was perhaps in the 1980s.
So yeah: actually read the staff rolls of your favorite Nintendo classics once in a while. So the many other names who actually crafted much of what we venerate in the great Nintendo classics get a little more credit.
(Though, of course, that might require people to grapple with even more Japanese names. Granted.)