If you're going to lie to try to convince me of something, give me a little credit and make it a plausible lie.
They aren't trying to convince you, they're trying to confirm their beliefs. They're making a big show about believing absurd propositions because they think - rightly, in all likelihood - that they'll be rejected by their peer group if they deviate from its dogma, and also because they get ecstasy - feelings of transcendence - when fighting their chosen enemies. That's the downside of secularization: people transferred their religious feelings into nations, ideologies and political parties, which thus gained the power religion once had, thus explaining 20th century.
In other words, Religious Right is exactly what it says in the name. Bengie was just doing their religious "y'all sinners gonna burn in Hell" trolling duties, and simply being lazy about it.