Just a little history help for snarling coyote -- who did a very good job!! Actually, Emma Smith always swore to her dying day that Joseph Smith was not a polygamist and that she was his only wife (not true according to the historical record, but her claim nonetheless). She also swore that her son, Joseph Smith III, was to be the next prophet. Not Brigham Young. She blamed Brigham Young for the polygamy idea and also claimed that he stole her son's rightful heritage.
She and other disillusioned Mormons who did not follow Brigham Young stayed behind and formed the Reorganized Church of Jesus Christ of Latter-day Saints, now know as the Community of Christ. Because of Emma's intense opposition to polygamy, the Reorganized Church never practiced it. The church became more liberal and traditionally Christian over time than the mainstream LDS church. The reorgnized church eventually granted women the priesthood, which the mainstream LDS church has never done, and took other actions planting it squarely in the liberal category, as opposed to the mainstream LDS church, which is squarely in the conservative (some might say ultra-conservative) category.
I was not aware that the reorganized church had ordained gay men, but it seems consistent with their liberal and Christ-centered religious philosophy.
I'm not sure why the final episode showed Emma Smith smiling approvingly on Bill's church, given her stance toward polygamy. It might have had more to do with her disdain for Brigham Young and therefore the mainstream church he essentially founded. I don't know. I found that rather confusing, as I did many of the things that happened in the last two seasons. To me, the series "jumped the shark" in the penultimate season and, after that, I kind of lost interest. I thought the finale was rather unsatisfying, but I don't know what I would have done differently.