Well you cant really call them stupid, they basically just read the bible and figured out
''Hey shellfish is evil too! Why isnt anyone hate mongering it???'' How attacking shellfish and the people that eat it, comes before attacking atheists or the satanic church is beyond me, though.
I mean...
Fundie1: Hey look those people are worshipping satan! Lets purge their wickedness! Fundie2: NO, these guys are eating shrimp, we need to purge them first! Fundie1: Zomfg!!!11 Your right! *Stomps over to shrimp eater* Fundie1: Stop eating that! Its an an abomonation! Shrimpeater: WTF?!? I'm christian!
