It's a state that was literally created to be a place for Mormons because they were a persecuted religious minority ran out of every other state and it was a huge desert wasteland nobody else wanted. It's only due to huge influxes of immigration, especially from the South, that Utah is... checks notes only 85% white and 60% Mormon.
So it's like less of a 51% attack and more, business as usual and intended. If anything, the non-Mormons are going to soon be able to do a 51% attack and take Utah back, since Mormons are only 2% of the US population, and Californians are mass migrating to Utah now that people realized you can build in the desert with modern technology.
Yes if someone starts a cult that does illegal things they don't get to claim religious freedom or cry about persecution.
Take a moment to think about history of US statehood. The Mormons, chased off Eastern settlements for their polygamy, settled most of the mountain West, declared governance, then watched big mining operations all around them get cut off from their territory and turned into full-fledged states, while they were not admitted to the union for decades.
It was a time of shared culture that is unrecognizable from where we stand today, and they absolutely didn't want to give statehood to polygamists...
I'm seeing no mention of Mormons breaking laws, the only mentions of law breaking references other people breaking laws to persecute Mormons. The governor of Missouri's declares that they are to be expelled or exterminated (!!!), the mobs attacked them and killed them, no mention anywhere in your link of Mormons breaking any laws.
Note that I do not take the position that Mormons broke no laws, I'd just like to know what laws they broke, and particularly what federal laws they broke, since my reply is to the claim that they broke American laws and not of some specific state.