Is this really a Western?
According to IMDb, this is a Musical/Romance/Western. Does Oklahoma! even count as a Western? Aside from the presence of cowboys and their trademark hats, and a few fleeting glimpses of a railroad locomotive, the tropes and characteristics typically found in Westerns are not present. There's no Sheriff character - Mr. Carnes' bushy mustache was sufficiently sheriff-y, but he's not the sheriff - there are no outlaws, bandits, or lawmen (corrupt or otherwise), there's no saloon with a tack piano and/or fiddler, there's no bank for outlaws to stick up, and last but not least, it doesn't take place in the *West*, as evidenced by the fact that none of them have Western accents; those are all *mid*western/Southern accents, although heavily exaggerated, and nobody ever says 'partner' or 'I reckon.'
What diversity used to mean: Diversity
What diversity now means: Fewer white people