I think she means along the lines of some people say nobody should be breeding at all, it's bad while others think It's wonderful to hear the neighbor is breeding her dog to the one down the street because puppies are awesome. I don't think she's talking about herself.
My feelings are this: We have a lot of homeless dogs, most of which are awesome family pets. That said sometimes people need something specific, they adore a certain breed that is PERFECT for their family and somewhat hard to find in shelters, They want a puppy and cannot risk getting a large dog because they will be evicted or simply really want a small dog, They'd like to show, they'd like to have a working dog and although shelter dogs can be made into great hunters, he would rather have a dog who's parents were both great at it so his chances of getting the perfect hunter are better, there are not many puppies in shelters their area and they would like a puppy etc.
So those people want breeders. Plus if their were no breeders dog breeds would die out and since dogs don't roam too much anymore dogs might die out eventually because in breeding would occur so much that health declined in the lines and they all started dieing young.
What I think is awful is seeing people breeding for no good reason. People who's only goal is to make great pets, well thank you very much but that dog can be found in the shelter. Breeding dogs who do not fit the breed standard of conformation and temperament means the puppies will offer you nothing that a shelter dog could not. Even though that breed is supposed to be a perfect match for you and your family, since you have no proof these parents are anything like the breed you may not be getting a good dog for your family. Take my aunt for example. Her Shih-Tzu is aggressive and 18 pounds (not over weight). She is very large for a Shih-Tzu and her brother and father are even larger. Her sister and one brother are dog aggressive. She hates being touched by most people. So she did not get the Shih-Tzu temperament nor does she really fit what one is supposed to look like. So if someone was out looking for that perfect pet, read about Shih-Tzus, loved them and got her they would be less than pleased since what they got does not look or act like what they expected or wanted.
If you want to play guessing games there are plenty of puppies in shelters that would be perfect for you. If you want something specific you need a GOOD breeder (or an adult from a shelter but lets assume you really ant a puppy). That is someone who breeds for a purpose that shelter dogs do not fulfill: a great hunter/breed specific worker, a show dog, or simply a dog who's temperament and looks will fit the breed because she has been shown, worked and (in the case of dogs who are supposed to be great with strangers, other dogs etc.) have their CGC and are therapy pets. those breeders are offering something you would have trouble finding in a shelter puppy.
Plus there is the issue of health, some people do not want the health risk involved with getting a shelter dog who might have inherited Hip Dysplasia, Luxating Patella or something else. A good breeder will have tested for those things that are common in their breed, a bad breeder will not so their would be no difference between the health insurance of that dog and the shelter dog.
So I am against irresponsible breeding and all for responsible breeding