While this is true you should place all of the blame on the show breeder. The show breeders do not make or change the breed standards. The parent breed clubs do. Breeders in general try to create their image of the dog. The original purpose of the show was to evaluate the breeding stack. But over time it has become political and a sport. The majority of people breeding with no concern for health have never shown a dog and do not know what the standards are for the breeds. Breeds have changed over the years. Some will argue it is evolution. I do not agree with them. But I would say it is due to too much inbreeding and also adding different breeds into a breed and falsifying the papers to create a different look.
I'll use the presa for an example. It doesn't look like the original breed. It had to be recreated. The standards have changed for them and I hear more changes are coming. You used to find more white markings in the breed. Now you are only allowed to have so much white and none one the muzzle or face. I hear that the percentage of white allowed in the breed is being reduced again. Some registries allow black and other don't. Some registries allow an overbite and other do not. I could go on but I need to leave. Everything goes back to the breeder. Inbreeding is not a good practice of selective breeding. Selective would be to consider the standards in place and only breed suitable dogs to reproduce dogs that are of standard. It is not to change the standard to make a dog bigger, more or less wrinkles.