Jackie, as a fellow Veterinary Professional, I would advise you to stay out of this argument. People have their own views, and if they would like to stay with them we can do nothing to force them. It is a sad fact that people would rather go against the advice of knowledgeable people because they are "part of the establishment", etc. it will be pointless to force them to change.
Im totally with you, but you can't win this argument...Ive tried and failed many times