User blog comment:Drache Mace/They're Kids!/@comment-3257939-20140804220330

Frankly, I think they don't use it because it's not necessary. I enjoyed the comedy of RWBY and how they manage to keep the RT comedy touch without swearing.

RWBY is more like a family show but since Monty already said that he wants the characters to grow before going into darker things, I believe that swearing, pairing (specially gay couples) and gruesome revelations will be a thing later in the series just like Monty wants.

There is no need for swearing, besides, screaming FUCK! doesn't really makes Red vs Blue funnier to me. Their conversations and jokes are what make it funny. Even without swearing, Red vs Blue would still be a thing.