I was going to say this yesterday, but have bumped into poodle mix people at dog shows where they show up to get health clearances. It's sort of like when you watch a toddler coloring? They learn very early to use the right colors like green for trees and so on, but they color like crazy inside, outside, and all around the lines. That's what they do when they talk a good game about getting full clearances, talk about breeding for structure and correct coat, and claiming they have gone many generations with their dogs... while you drag the truth out of them that they can't go more than 1-2 generations without breeding their mixed breed dog back to purebred dog because there is no actual knowledge shared even from the purebred experts who are lending a hand to them.Our friends’ breeder also has videos on their site explaining how to read pennhip results, interpret embark results and the importance of OFA clear elbows She doesn’t claim to try to create a new breed, just to breed health tested doodles for those who are seeking them.
The ironic thing is that people 100-200 years ago knew more about creating a breed than I think people do today. People within golden retrievers who are holding hands with mutt breeders and saying they want to help them get their "breeds" (at this time it's splitting off into ten million poodle mix breeds) off the ground.... they can't even produce golden retrievers who are EVERYTHING (CH dogs, FC dogs, MACH dogs, OTCH dogs, longevity, hips/elbows, etc).
Many golden people who have been breeding goldens for 40-50 years sometimes still really struggle to consistently produce all around good things in a purebred dog. Good luck getting their expertise on making an all new breed that can close their stud books in 10-20 years.