Utah was 77% Mormon in 1990 and somewhere between 42%-60% Mormon today, with a lot of that drop-off coming in just the last few years as people have stopped identifying as being members of the church. (https://religionnews.com/2023/12/28/study-utah-is-no-longer-...)
While it's absolutely true that the Utah state government is predominantly made up of Mormons, that's also representative of the population. Which may still be problematic in many ways, but feels meaningfully different to me than a group that is only a small percent of the population holding significant power.
This can be hard to unpack for many, because they're often unaware, products of an environment that they're still living within. My ex was very culturally Muslim despite not knowing which of her traditions were specifically Muslim. I grew up with a Japanese mother, and thoroughly American people still find it difficult and exasperating to extract decisive answers from me when I think I'm being perfectly clear. Even understanding this, I'm not always as compassionate and yielding to people I find tedious, which I won't ever talk to them about if they don't also realize it.
I'm not sure how specifically cultural Mormonism presents, but knowing how deeply and totally Mormonism informs people's identities and worldview, I'm sure there are plenty of tells.