Thank you for your careful response.
So we are clear, mythologies are just stories. However, if I was in a position to be rewriting myths that would be assimilated, preserved, and passed down to progeny, you would have to wonder why I changed a story. To use a modern example, the North Korean government has its people believe that Kim Jung Un was born atop a sacred mountain and that the event created a new star and turned winter to spring; also: that he doesn't need to poop. Also: that the internet is a myth and no such thing exists.
Sure, with the right perspective, life lessons can be gathered from the most tragic of stories.
However, I chose to pursue the origins of this myth deeper to demonstrate a historical incident and older myth that is all but lost.

I don't think it's fair to conclude that the monstrous aspects of this deity were caused by subversion from a patriarchal system.

It's a fair issue to be speculative of. But also a fair issue to consider as plausible.
In prehistoric times, the victors rewrote the history of the conquered, destroyed their temples, destroyed historical records and monuments, and punished any attempts to preserve them. It might not have been a concerted effort to assert a patriarchy, but it was part of a patriarchy's larger effort to erase the identity of what used to be a matriarchy.