I don't recall a reference to cussing in that discussion. What type of language do you think we would need? Generally speaking, I can't think of a reason to say something that would be bleeped out on this show.
Yeah, I figured that most cussing wouldn't be culturally appropriate. There's really no need for an elf to ever say, 'Son of a bitch.' So, even if our characters do have reason to cuss, we'd likely invent that vocabulary, a la Firefly.