“God was disgusted by the fallen angels mating with women to produce half breed Nephilim”
Uh...no.
The “sons of God” refers to Seth’s line, who had remained faithful to God.
The “daughters of men” refers to Cain’s line, who had not.
There was no instance of fallen angels mating with humans.
Seth's line cannot be Sons of God. Seth was a man born of man. Sons of God are born of God. Son's of God are Adam, Jesus, Angels, and we are given the right to become Son's of God through rebirth in the Spirit.
Adam was mud, breathed into by the Holy Spirit to become a living soul. He was directly created by God. Jesus was born of the Holy Spirit hovering over Mary, a virgin, for conception. Seth was a man, conceived of a fallen woman.
We must die to the flesh and be reborn of the Holy Spirit to become Son's of God. Look up the requirements of the High Priest to take a wife. He requires a virgin. The Sons spoken of in Gen 6 are definitely fallen angels. How would the sperm of man create gigantic freaks?