I disagree entirely. In the modern world a dog absolutely must fit your lifestyle. Any dog of any breed will have its own personality and foibles but at least with generations of selection and knowledge you can pick a dog that is likely to compliment your family and lifestyle.
I would not want to bring a total unknown into my household, nor a dog that couldn't fulfill the purpose that I require it for - I wouldn't get very far picking out a Heinz 57 pup from the rescue centre and expecting it to become a useful sled dog. I've had pretty good success rates when picking out a certain breed.
Likewise the advice for people to avoid working breeds (or at least those who historically worked or had a purpose, very few do now) unless they are actually going to work them, or if they have a young family and are time-poor. Ditto for guarding, herding, sledding... the instincts are still there and are all too often at odds with the requirements of modern households. Then the dog ends up passed from pillar to post and in a rescue or dead in the pound.
I absolutely 100% decry the practice of breeding for form over function, the exaggeration of characteristics to the dog's detriment, the practice of over-using popular sires, the narrowing of gene pools. There are breeds I'd happily see die out in their current form - but now people are finally seeing the light and breeding for health and moderation, even in the grossly deformed breeds (see certain bulldog and neopolitan mastiff breeders making huge progess in turning these dogs around). With the help of these long pedigrees it is possible to pinpoint exactly where things have gone wrong and which matches to make to correct them.
What is needed is more education. People see nothing wrong with buying a pup from the lady down the road whose pet dogs had lovely puppies; they keep buying from puppy farms, they breed their own pet dogs with no awareness of genetics, health testing, working ability and perpetuate the cycle. They are aversive to adopting rescues because of the common belief that they all have behavioural problems or something wrong with them. They believe that crossbreeds are always healthier and that all pedigree dogs are deformed and unhealthy. They believe that certain dogs are vicious, that some are so intelligent that they 'practically train themselves', that the cute puppy will stay cute and biddable forever when they have no time to give them input. Puppy buyers are stupid, rescue centres are or have been too picky (some are changing), a lot of breeders are or have been stupid, a lot of show judges are accountable.
Dogs are in crisis and doodles won't solve the problem.
And breathe...