Reggie is a comedic figour head (playing a archtype "fool") that they use in presentations to the american public, to demonstrate how things work.... typically by haveing reggie use a device/game and him being silly, adds abit of humor to it.
How is someone portraited as a comedian/fool, at events, to add humor to nintendos presentations, ever going to be taken seriously enough to be the president of a company like nintendo?
This isnt ment to be mean, I know Reggie is a tallented person, and its just a role he puts on... but he has a persona in the publics eye that every differnt from what you would expect of the president of a company like nitnendo.
also Reggie has made some weird PR statements.... some of which make him appear untrustworthy.
That is not what you want in a president of a company.