The number of maulings would go down even if you replaced every Golden Retriever with a chihuahua. Replacing every member of a particular breed of dog capable of mauling someone with a member of a breed incapable of it would always cause a reduction in instances. Maybe you think we should go around Old Yellering every Golden Retriever in the world, just to be safe?
Quick thought experiment - magically replace every pitbull in the world with a chihuahua instead. Do the number of maulings go up or down?
The number of maulings would go down even if you replaced every Golden Retriever with a chihuahua. Replacing every member of a particular breed of dog capable of mauling someone with a member of a breed incapable of it would always cause a reduction in instances. Maybe you think we should go around Old Yellering every Golden Retriever in the world, just to be safe?