That doesn't make any sense and I don't agree with it– there are no more Jedi. There's you, me, and him. The order that had gone out decades ago had wiped them out. Master Yoda is old, he can't be expected to live forever let alone do anything for either side. And Obi-Wan...

[ It didn't need to be said. Luke may not have been able to see it but she was shaking her head. ]

There will always be a good side and a bad side. Light and dark go together. All that matters is how light overcomes dark before it can be overshadowed.