LogFAQs > #975578335

I assumed that this was just due to him getting old and maybe not being able to do the voice anymore. He obviously wouldn't have quit for no good reason, and I don't think that Nintendo would have reason to terminate him when he's been such a staple for them (plus how little he actually needs to do for each new game considering how many clips get recycled). So it seems likely that this is happening out of necessity because he's no longer able to perform the role for whatever reason.

The new job title is basically what they did for Miyamoto too, it's hardly anything but their way of keeping him at the company out of tradition/respect, while he hardly has to do anything and still gets paid.