@MoiraRoseIsMyQueen
The problem with these designer doodles, is the healthiest pedigrees aren't being used, so the off-spring are automatically off to a bad start. The best breeders, with the healthiest pedigrees, are breeding to make their own breed better - they're not breeding for money, or to create mongrels.
I always use myself as an example. I breed Golden Retrievers. I have a boy right now with some of the best health scores I have ever seen for his breed. I could - and have been approached many times in fact - use him to breed Golden Retrievers or Goldendoodles. I don't do either. I don't breed him with other Golden Retrievers because his genes are already in the pool through his mother, his father and one day through his sister- all I would be doing is saturating the gene pool with more dogs related to him and I want to keep the breeds coefficient down. I don't breed him with Poodles for two reasons; (A) I breed to make my breed better and (B) I don't breed for money.
Most good breeders you would want to buy from take a similar stance. I could probably make high five figures if I bred him to create Goldendoodles - particularly given how few of them have decent health tests - but I don't.
And health scores matter. If you look at any of these Goldendoodle, or cockerpoo, or cavapoo, breeders (particularly those with snazzy websites), you'll see how few of the dogs have any health tests at all - let alone good health tests (and let's not get started on how most of them overbreed their dogs and then dump them). But getting back on track, the lack of health tests is a problem.
Many of the dog breeds being used to create these designer dogs suffer from the same health issues - dysplasia and PRA (prevalent in spaniels, retrievers and poodles) - so just because they're different breeds doesn't mean they're healthier. Very often they're worse off because of the lack of care over breeding.
And even if, by some miracle, you find one with health tests. They almost certainly won't be up to the standard that you should want. A good breeder won't just have the health tests of mum and dad, they'll have the results of the grandparents and great-grandparents as proof that the lineage is healthy - you just don't get that with designer doodles.
And then, once you've gone past the health tests that are mandatory...you get to the ones that aren't. Heart issues, resulting in sudden death, is an increasing problem in Golden Retrievers. But testing is not mandatory (under KC), although good breeders are doing those tests. Poodles are also prone to heart issues (and again, testing is not mandatory I don't think - although I know less about their issues). So, if most of these breeders already aren't testing for the issues they absolutely should be testing for...do you think they're testing for the rarer ones? No. They're not. Why? Because they are lazy and know little to nothing about these breeds.
And then, once you've got past the health issues...you get the personality issues. Dogs should be bred for personality (although this is harder to predict) as well as health. Lots of these designer doodle breeders just seem to pluck any dog off the street at random...and it's just not that easy.
To humanise it a bit...you wouldn't just grab a bloke on a night out, think 'oh he's alright' and decide he's the one you want to have a kid with and get down to business there and then, would you? It's the same for dog breeding. The first potential match for your dog you come across isn't necessarily the right one. When done properly, it can take months - or even years - to find the right matches that are the best examples of their breed and good breeders (both stud owner and bitch owner) will vet each other thoroughly. I took well over a year to find a stud for my last litter because I wanted to be 100% sure that he was the right dog, with the right health tests, with the right lineage for the type of dog I wanted to produce.
I could go on and on, but essentially the RVC has completely de-bunked the idea that mongrels are healthier (for the reasons set out above). 😊