Seems like we need to implement dog licences instead. It takes skill to own a well trained dog. Then just make sure people who are miscreants are banned from owning them.
Of course, the people who abuse their dogs to the point of become dangerous will just move on the next breed.
Playing whack-a-mole isn't ever effective policy. Before this breed it was pitbulls, after this breed it'll just be something else.
Dog attacks won't stop unless we ban all dogs, stop people who abuse animals to the point of of being dangerous from owning dogs, or stop people from wanting to abuse animals to the point of being dangerous.
That said, this isn't a harmful policy, just an ineffective one. If you want to own a dog, for good or ill, there are plenty of other breeds out there.