Didn't whatever religion(s) Judaism originated from have both a male and a female god anyway?
I've heard that the YWHW was originally a highly aggressive warrior god, which eventually absorbed the traits of all other gods in the pantheon until he became the omnipotent creator-type god that is so popular today.
I heard the same thing: YHWH was originally a tribal god (there's even some oblique references to the existence of other gods in the bible...), and then someone noticed that 'He's the best!' is easier to defend using the lemma 'He's the only one!'.
There might be possible support for that in OT, where Moses is facing off against the Egyptians, there's this odd "my power / your power" battle going on, supposedly it's between God vs the Egyptian mages, but those are some seriously powerful magics on both sides they had going on in that battle. Did ancient mages really have powers to turn staffs into snakes? Why not mages today? It would make more sense if it was originally a "my god" vs "your god" battle being discussed.
Another point is that The Lord apparently repeatedly alternates between help Moses on one hard, and hardening Pharaoh's heart against Moses on the other. So we have God promising something, using powers to help get it, then repeatedly using different powers to sabotage the very thing he was helping Moses to achieve, over and over. It's pretty weird "God" behavior unless you interpret the whole escapade as a rewritten verse about two Gods competing.
The nail in the coffin that this whole verse is rewritten is the sheer bullshittery of claiming you went up to a foreigner who doesn't believe in your religion, told him about your God and he DIDN'T go "oh yeah, well I have my own God and he's better!". Clearly it would be normal to point out that you believe in a different God, not tacitly accept that some random douchebags God is the one and only real God...
And Pharaoh said, Who is the LORD, that I should obey his voice to let Israel go? I know not the LORD,
I mean, come on religion...I'm supposed to believe that the Egyptians were Atheists now? did they not even know the concept of a "god"?