Doesn’t change the fact he’s going to need to replace it at some point. You saw it, he needs to be able to use One for All like Gran Torino showed him but he still sees it as a finisher rather than, say armament Haki.
That means getting gadgets (in the meantime) to compensate for the fact he can’t punch without getting borderline armless
Maybe that world is the result of Pokemon evolving instead of humans and ate them. Then they mutated to resemble the species to better get used to their new environment.