There’s a lot I agree with here, but I think you’re wrong about “God is a white supremacist” being a brand new thing. It’s a vile thing, for sure, but just not so new. It’s rarely been stated quite so bluntly, but the idea has been around for a long time.
For example, the Texas “Declaration of Causes” for secession in 1861 made it very clear that they thought white supremacy was “Divine Law”. (Sorry for the length of the quote, it can be hard to grab a punchy sound-bite out of the way people wrote in the 1860's.)

“In all the non-slave-holding States, in violation of that good faith and comity which should exist between entirely distinct nations, the people have formed themselves into a great sectional party, now strong enough in numbers to control the affairs of each of those States, based upon the unnatural feeling of hostility to these Southern States and their beneficent and patriarchal system of African slavery, proclaiming the debasing doctrine of the equality of all men, irrespective of race or color — a doctrine at war with nature, in opposition to the experience of mankind, and in violation of the plainest revelations of the Divine Law. They demand the abolition of negro slavery throughout the confederacy, the recognition of political equality between the white and the negro races, and avow their determination to press on their crusade against us, so long as a negro slave remains in these States.”

https://www.tsl.texas.gov/.../abo.../secession/2feb1861.html