All of Mormonism's "wackiest" ideas are Biblical anyway. For example, polygamy isn't proscribed by the scriptures canonized by Catholic/Orthodox church, it's just forbidden by "tradition." Temple garments are in the Old Testament. Baptism for the dead is listed in 1 Corinthians.
I'd be wary calling it pro-White, though. A lot of us Momos are pretty cucked these days, and the Church has a habit of getting wrapped up in stupid shit lately.