I would say most of us aren't breeders - but we are interested in the long term health and welfare of our own dog and dogs in general and all of us didn't like what we saw on that BBC documentary.most here aren't registered breeders who are interested in the changes that are coming about or are registered breeders who flout the current rules
As for registered breeders who flout the rules - I think we've had one join up but she hasn't posted. Other breeders eg ones that are not doing the health testing - have left of their own accord - I admit we don't make them feel all that welcome. Don't confuse this site with that other one where any dodgy breeder can list their puppies. I don't see great lists of puppy mill ads here.
I know of at least one human community that is very inbred - and doing ok so long as they kept it that way, but the 2nd Gen Aussies have a hard time with the limtied choice - so tend not to. Overall genetic diversity works better in the long run. Inbreeding requires great caution. The main reason would be to work with a known gene pool. But if breeders knowingly breed with dogs of dodgy health - and win prizes with them - it can ruin the whole breed. It really pays to do your research. From many sources - not just the puppy mill website.