After going through Starmen.net and looking at the forums(this is an Earthbound website, btw), I realized that nearly every fandom has some sort theorizing going one.
Yea, I just NOW realized it. Huurrrr...
But, the difference is that Kingdom Hearts is maybe a few years old, but Earthbound/Mother? That series is almost twenty years old, and the fandom is small, but dedicated.
The Kingdom hearts fandom is huge, but I'm not so sure about the dedication. Still, I think Kingdom Hearts will still have a big fandom twenty years from now. And yes, there will still be theorizing and the wish that Axel would come back.