That is part of the joke. The fact they can't get real robes was brought up in the original video -[a href="http://www.escapistmagazine.com/videos/view/loadingreadyrun/2755-Discount-Deities#"]Discount Deities[/a]Screamarie said:I love the fact that the cultists are so obviously wearing snuggies. To me it's part of the joke, we're such ineffectual cultists we can't even afford real robes.
There's even a line about picking up safety pins for them.
Edit: Aaand ninja'd.