Having read the Book of Mormon I find it hilarious that people believe this stuff. I reads like a self-insertion Old Testament fan fiction with photocopy Jesus tossed in at the end.
But then again, Leviticus comes off as a wish list for Priestly dinner parties.
I love the "That makes sense...." at 2:20. It's like the director is said "ok, we basically just heard that our church is based on idiotic early 19th century folk magic. We need a chaser. You, baldy, let us know that we're not all morons for believing this stuff". And the best he can do is a half-hearted "That makes sense" that really says, "this clearly doesn't make the slightest bit of sense".