Their explanation of the casting out of Satan is literally non canon. They couldn't even do research as to what that faggot did to get cast out. He wanted to be fucking king, above God. The book (bible) was better
Its the classic Promethean interpretation of Lucifer, where his act of encouraging mankind to eat of the fruit of knowledge is reinterpreted as something closer to how Prometheus gave man fire; a divine being sacrificing his own divine position to allow man to advance and become independent of God (or the gods, in Prometheus case). However, this is a completely wrong interpretation. Lucifer was lifted up in pride and lead an active rebellion against God, causing himself and one third of all the angels to fall (interestingly, Hazbin's explanation completely overlooks this, implying that Satan was the only angel to fall, and is thus the only fallen angel in hell). Also, its generally believed that the fall happened prior to Lucifer entering the Garden of Eden, not afterward. Lucifer (who is specifically identified with the serpent in the Garden of Eden) caused mankind to eat of the tree of knowledge of good and evil specifically to separate them from God and corrupt them. The tree of knowledge didn't allow man to advance and create civilization; they already had that capability. It made them aware of
sin and introduced sin into the world. Thus, they were corrupted into becoming sinful beings who commit immorality and violence. It had nothing to do with mankind becoming able to advance as a species.
This is a common reinterpretation of the story of Lucifer's fall, and it doesn't surprise me at all that Vivian went with this. It's already been made clear that she was going to portray heaven as not being much better than Earth and Hell, and this story that Charlie reads paints heaven in a very poor light. What would be interesting is if it turns out that the story that Charlie read was
a lie, and the truth is closer to the Biblical version, and one of the things she finds out over the course of the story is that her father led a petty rebellion out of pride against God, and was cast out for his trouble, and the events of the Garden of Eden were just a petty attempt to spite God. But I doubt Viz is going in that direction.
Another thing I noticed is how God himself is never mentioned in Charlie's recounting of events. Its even portrayed like it was the angels that actually created the Earth, rather than God directly. Is Vivian going to say that there is a Heaven, hell, Satan, and angels, but no God?