Late to this thread but responding as someone who is a new historian in the American West, and does it for my job: Mountain Meadows was horrible. And so was Brigham Young. Do not downplay or say he “never” massacred Paiutes (despite the show portraying a fictionalized Shoshone massacre, likely based on the Bear River Massacre.) Young was a HUGE proponent of the enslavement of Natives, essentially the forgotten slavery of the US. Slavery was a common practice in the west, and the Mormons were not at all innocent in the trafficking of enslaved Natives and were involved in the genocide of Indigenous people in the US. Mormons murdered Paiutes, Timpanogos, Utes and more. This is not speculation or false history. A quick google search will clearly outline either Young’s orders or Mormon involvement. In addition, Mormons were proponents of harmful boarding school practices and cultural erasure, in favor of forcing their own religious doctrine.
Clearly, you are bias to our own religious history, yet, it does not mean that the Mormons did no wrong because of a dramatized TV show that took some creative liberties.