they're really not, slc has a pretty progressive community but it's in direct opposition to the mormons. they're officially accepting of gay people, but as long as they don't do anything gay. they aren't ok with trans people who transition at all.

utah also recently passed bathroom laws for all govt controlled buildings and schools and there are ones for colleges in the works.

generally mormons will be nice and accepting if they think they can convert you, but that's about as far as it goes

https://www.advocate.com/religion/2018/10/08/mormon-leader-lgbtq-advocacy-comes-satan https://www.advocate.com/religion/2019/10/03/mormon-leader-gender-assigned-birth-eternal

https://www.sltrib.com/news/politics/2024/01/30/utah-transgender-bathroom-ban-goes/