The reptilian is the idea that child can be torn away from mother through predation (from snakes). Woman had the first realization of malevolence, and pulled man into the fold unwittingly for her own selfish protection.
This knowledge of wasted resources and shattered love for child within the female psyche is the catalyst for the ascention of consciousness. Paradise is the blissfulness of niavete. The lack of understanding of the impact of the destruction of child. The lack of understanding about malevolence. Once that changed, there was no going back.
Your story is real in a certain realm of analysis. Demons are the possession of psychological traits that sustains through torture and sodomy. It's the darkness of man's heart. The ying yang. We all have a spec of evil when possessed by good. We all have a spec of good when possessed by evil. Possession is a description of each individual persons alignment in the world, malevolence or benevolance. Each is sustained through different mechanisms.
Benevolance is fostered through the medium of love. Reaponsibility shouldered despite the knowledge of evil and suffering. The mother's love for child is the prime example of this propegation of benevolence. Mother cares for child and teaches them the way of good and light so they may go forth and act in kind to revivify the culture into the future.
Malevolence however must sustain itself in the shadow. The mother who is touched by evil originally passed down that traight to their children. Probably why women are satanists/lucifarian high priestess. Their driven by acts so attrocious, pain suffering and torture so evil that it scars everyone but the most prepared. Torture and rape of children at age of 3 turns them into a slave. A slave that will do the bidding of evil for a life time. Does Satan exist? No. Does the idea of Satan exist? Yes. And it's just as powerful.
Humans exist outside of natural selection. We exist in a realm of social selection where the most successful culture is selected for. The most successful way to carry forward your culture is through love, light, and good or through pain, darkness, and evil. The right or left hand path. Then ying or yang.