Following the episode where you point out how stupid a religion’s premise is

While shamelessly glazing its members. Gary, the Mormon counterpart to the South Park gang is Twilight Vampire levels of perfect at everything. The punchline of the whole episode is that the dogma of the religion doesn’t matter, because the practitioners are these perfect, charming, innocent people. And you’re all kinda assholes for bringing up their religion to begin with.

Like, that’s the joke. The final beat of the episode is laughing at you, the audience, for thinking Mormons aren’t cool.