As I said I'm not against mixed breed dogs, it depends on the circumstances. Working dogs are a prime example, farmers breed the best 'workers' together and breed doesn't come into it. But with pets there are more morons who have no idea about breeding and what disasters crossing certain breeds can have.
We have already established that there are both good and bad purebred breeders. Show me some good mixed breed breeders and I'll be on their side too.