Yes, there is a fork of a fork and yes, there has been A LOT of things that happened behind the scenes. There is no limitations on who can create a fork and who can't; whatever their reasons may be. But does this really all matter, as long as there is an emulator out there for the community to use? And like Yuki said, it's in the past now. There is no need to waste time in dealing with these things as they've already happened. It is definitely better to focus on the present and the future.
The best that each project can do now is to improve their own project and hope for some collaboration between the two.