I get your idea but personally this is what I believe (my personal opinion off -blam!- ive read in lore) Its said that all living things have light in them inherently only when a ghost revives them does that really hit a point where you can use it. We know the Universe was made when the Gardner and Winnower fought So wouldn’t the forces be equal? We know Darkness is the realm of the mind and we have actually faced a being of pure psychic energy one that feeds off terror and pain and was once called by psions as the “god thought” (Everything past here is speculation btw except the chimera part nezerecs body was said to have different eyes from different races cause if this) What if Nezerec is the first of a line of more enemies we will fight based in the darkness, he isn’t a physical being and we know this since his body was a Chimera and after we kill him in the raid he continues speaking to us post death. I believe that the next enemy after the witness will be beings of darkness like Nezerec that come to attack us. Hell they have been experimenting with things dropping after we kill enemies or do enough damage so what if these are tech tests for what would be a enemy type that infects enemies and has to be expelled by damaging it enough (like the moths in WQ) or be destroyed physically (like the tech packs in LF) Or well the Vex since we have never seen a Vex combat frame and those guys have existed since before the Universe they must have one big army