The oracles do see us killing Atheon, that's why they sing to us.
Oracles decide what is real and what isn't so they can create whatever future they want. They want to negate us because our future puts their future in jeopardy.
That's the whole purpose for killing them. That's why Kabr created the relic, to save us from negation.
English
-
I'm not an expert. Just my interprotation from reading other peoples stuff.