>>139862097Because Kyle's thing is being the torchbearer. He works best on Earth if there's no Lanterns but him, or if he's rebuilding the Corp. Which was what he was when he had his introduction and ongoing.
Corps comes back, and he's not needed when you have the "real" GLs in Hal, Guy, John. So post-Corps revival, Kyle works the best IN the Corps, in space. He's the torchbearer, respected by the Corps even when they'll hate and shit on the Earth GLs. And thats what Johns did with him after Rebirth, which was the best Kyle has been since his ongoing.
But you know how comics are. If its not happening on Earth, book isn't going to last. So Kyle gets tossed out.
