I honestly think the cockerpoo ought to be recognised as a new breed and brought within the same framework as other breeds. It's here to stay so the sooner something is done to protect the dogs, the better.
I know the KC has (many) flaws but at least they provide some way to track breeders, lineage and provide advice on the best health tests for potential breeding dogs.
The cockerpoo is here to stay and deserves the same protection as other breeds now - even if that protection is also woefully inadequate. Right now, they are a bad breeders wet dream - hugely popular but with little oversight from any external body on how they are bred. It leaves them vulnerable and an attractive target for poor breeding practices.
I also am hugely sceptical that this perfect family breed also just happens to contain the right mix for massive litter sizes. How convenient for rubbish breeders.
fwiw whether a dog is bred by a hobbyist or full time breeder, they deserve the same care and attention. So for all the family pet breeders, that means a sound foundation knowledge of genetics, potential genetics faults in the parent breed(s), full health testing, full lifetime support, lifetime commitment to take the dog back for any reason, good knowledge about the socialisation/learning stages of a puppy, good knowledge about dog behaviour and training to advise the owners, carefull selection of mates (i.e. not just putting two dogs together because they are the ones you own) and so on.
If hobby breeders can provide all that, then all is well. The page on why NOT to breed from the Doodle Trust is also bang on. Not many people can offer to take back one or more dogs from a past litter, some of which may well have developed behaviour or medical problems that caused them to be handed back etc.
If there is one single piece of advice on how to choose a breeder, it's not to go by recommendations from pet people who have similar breeds. They will love their dog and likely blind to their faults as well as struggle to accept their own breeder was less than perfect. I've lost count of the times on here someone has posted a name or website of a "great breeder" that has sent shivers down by spine when I saw it so it's clear there are very wide variations on judging a breeder.
Have an objective and strict list of things you would expect to see in a good breeder and don't stop looking until one ticks all that list.