UEG:
The panels where UEG is erased are
this one and
these ones. First, it was said nowhere that her soul, mind, and concept were erased. The divine core is not said to be a concept . The only justification used is the fact that Rick's sword can attack conceptually, but that doesn't mean that he conceptually attacked UEG or that the divine core is conceptual (Anyway it was remove in another threads). Contrary to that, we are only told that the body of UEG has been erased and not anything else.
The justification for the NEP is that she can exist after the destruction of her body, soul, mind, and concept before regenerating herself over time.
Nothing like that is said here. He just said that UEG should have been erased, which she confirmed by saying that she WAS erased, but not that she was currently erased. There is no mention that she was still in a non-existence state when she spoke. It was even said that she was standing behind him, which shouldn't be possible if she doesn't exist. And again, it is said nowhere that the attack of Touichirou erased her at another level than just the physical level.
There's also
this chapter, where a godess is dead and going to the bottom of a sea of darkness (which should prove the nep), first, being able to exist in a non-existent place do not qualify for a nep because you are still existent. It is stated nowhere that it a real non-existent place, and directions are mentionned in the place which is contradictory to a non-existent void (the concept of direction should not apply here)
And while she is in this state, she cannot do anything, like see or interact with the world, she's just here, waiting for her resurection.
To continue, when UEG was in the void, she said that a concept like "nothing" cannot exist, was horrified of this non-existent place and could not do anything about it (weird if she's herself non-existent) and she should have a nep 1 all aspects ? And the simple fact that she "died" after being absorbed by the darkness shows that she has no NEP, since the very principle of this void is the fact that nothing can exist in it, and UEG was no exception to this rule, if she could remain non-existent the void would have done nothing to her.