This is only the tip of the iceberg of the issue of over breeding. There are many more examples - pit bulls, retrievers, King Charles spaniels but here are a few.
It used to be that cats were strong and healthy because they were not bred for deformities like dogs are. Not anymore. I have rescued two Maine coon cats. My first died at age 4 of a congenital heart defect that is common in that breed.
IMO, we should stop breeding "pure breeds". It almost never "improves the breed" and "registered AKC" is basically nothing more than having the dog's name, and yours, written in a book.
Adopt from a shelter. And if you think you want a "pure breed", check for breed rescues and check at your local shelter. fully 25% of all animals taken to shelters are pure breeds and more than 80% are younger than 3 years old. IOW, we're killing young healthy animals because more are born than there are homes for. Adopting from a shelter makes you part of the answer instead of part of the cause of the inexcusable tragedy of dog and cat overpopulation.