True, to an extent. You are right in that that residents of SLC (plus similar areas like Park City and Ogden) are politically disenfranchised due the state being something of a theocracy.
However, SLC itself is actually pretty liberal and has a lot to offer. It's far from perfect (mainly: air quality issues in winter and the political issues), but anywhere you choose has a different set of compromises. Is it right for you? Probably not, but I promise it's a better place to live than it looks from the outside.