FOFL!!! We've had ours for 2 days. They came from working stock and were not properly handled like pets would be (the breeder admitted this!). Freya was very nippy for the first day, and didnt like being handled. Turned out there was a tick on her back, which we got rid of and now she is sweet as cake, she only nips during their little "wardance" moments.
So, yes, that is total bull, ferrets are generally very sociable critters, and dont bite the hand that feeds.