The Gluttonous Beast is incredibly powerful, a ferocious giant beast within the entire universe that could devour a planet as if it were child's play.
Even though the Devouring Demon Fetus isn't as formidable, it's already considered the most ferocious creature in the Mysterious World.
Using this Devouring Demon Fetus to create an external incarnation isn't bad at all. Perhaps when he leaves the Mysterious World in the future, this external incarnation could help him rule the entire realm.
The consciousness of the Demon Fetus wasn't erased by Ling Xiao but was instead integrated into the Divine Sense he separated.
It became part of the memory of the external incarnation.
This was necessary because it was the only way to allow the external incarnation to gain all the abilities of the Demon Fetus and control them, making future cultivation or devouring much easier.
