>>713946560
It's probably going to be revealed that instead of purifying anything, the Traveler is merely storing abyssal energy inside themselves by drawing it from others. Then later on we get an arc where it's revealed doing that isn't actually healthy, Traveler gets bouts of dumb and angst until they master it (perhaps a new gameplay mechanic), or more likely just blow a huge load on some boss' face during a cutscene in some pivotal chapter ending battle, two birds with one stone.