Hmm, so far I`m not really seeing many reasons as to why Reggie should step down. So far, it seems to be be due to some of the quotes he has been saying since E3 happened. Sure, Reggie has said and done some questionable things, but I don`t really see any reason for him to go, and the reasons to why he should don`t seem strong points, with some of them having some truth to them or questioning things happening in the industry. The comment about announcing games way ahead of time has some truth, specifically SE`s FF15, which was V13 at first, and The Last Guardian, which I don`t recall how far back it was first revealed. For all we know, there could be more that have done that, but I`m not sure. So it is something true that he called out. Ninten overall seems to handle announcing and releasing their games in a timely manner, for the most part.
Also, with the VR thing, I think he does make points about it, such as the device not being very social friendly. From the look of the design and watching others play it, it does appear that way. I know there are games that have some social aspects to it, but it does appear to look like something strictly a single player experience. So I think it`s good he shares possible issues with VR. Perhaps that way it can help shape VR to be even better later on.
So yeah, Reggie may have said some things that people don`t like, but not all of it is purely wrong, or bad. For all we know, he could have had a hand in some of the better aspects of Nintendo`s actions, such as Nintendo World Championships, or the Splatoon live event. Who knows. But I think it`s unfair to rate him based on his quotes from E3 alone. We`d have to see the whole picture first before making claims like that.