How is Yahweh not immoral?

[Kirbmarc]

it'd be easier to swallow if God was portrayed as a fuck-up who is trying to improve

True. But even in that case, he wolud have a lot to atone for. Multiple accounts of genocide aren't a simple screw up.

The slaughtering paladin has more depth, and as a character in a narrative it becomes that much more compelling.

But even a fallen hero has some dignity left, some ideal that he fights for, no matter how warped. At worst, a compelling villain still has some style, some admirable qualities about him. Otherwise, he'd just be a common jerk, who isn't very interesting.

The god of the Bible isn't a compelling, morally grey anti-hero/anti-villain. He's a prick who kills out of jealousy.

He's not a Sam Spade, or even a Frank Castle. He's not even as suave as an Hannibal Lecter, or as clever as a Moriarty. He's Biff Tannen: childish, petty, ignorant and arrogant.