With his student (Goku) dead, King Kai no longer had a reason to bother with the affairs of a single planet among the millions of planets in his galaxy.Watch a video on how the Future timeline doesn't make sense. I think the first step is to consider Goku not getting his body because he died of natural causes.
But there's really no way to explain King Kai not contacting the Nameks at least or being in contact with Gohan and Trunks.
mirarA nadie se le ocurrió esa idea.
Headcanon: Goku had moved on and likely wasn't even aware of it. When the Z- Fighters showed up they went to Ming Kai hit Goku was already training with the Grand Kai and couldn't be bothered.
Goku might be so occupied that no one can reach him.Why wouldn’t Goku come back on his one day pass to fight the Androids?