Unfortunately, many breeders are still convinced that line-breeding is the way to go, and don't believe in genetic diversity. If you wonder what's the importance of genetic diversity within a breed, please read this article: https://www.betterbred.com/2019/10/04/why-biodiversity/?fbclid=IwAR23L1p2pqF9pghKGovkPam-pWfucMuZMeOdnbMyKGjufcHhRJRiYkUMb6k