Okay, first of all, there are many breeds out there not riddled with these issues you speak of, there are many breeders out there that breed to avoid these issues that you speak of, and that breeder breeding the dog with the cataracts is not one of them, not even close. The fact that you would be so blind as to think that this person is a good breeder, just because their dog is a champion, insinuates that you are not a good breeder yourself, nor were you when you were breeding purebred dogs, as any good breeder would have commented on that with some sort of remark about how they do their best to avoid situations like that in their own breeding program, rather than saying they're just going to breed mutts instead. If you want a dog free of these problems, you can find another breed free of these problems, or, here's a thought, go adopt a dog? There's plenty of dogs in the shelter that deserve fantastic homes, but are missing out because too many people are deciding to breed their dogs for all the wrong reasons. 3-4 million dogs are put to sleep in shelters across the United States each year, and that's because of irresponsible dog owners and backyard breeders.
Mutts are not necessarily more healthy than a purebred dog. Purebred dogs are inherently unhealthy because of bad breeding practices. And yes, that includes the Cocker Spaniel as well. If it were not for human influence in creating a physically appealing dog, rather than a genetically and physically (and mentally) sound dog, then they would not have problems with cherry eye, rage syndrome, etc. There are plenty of dogs that do not have these genetic issues, too, plenty of breeds that do not grow hair in their ears, plenty of dogs who do not develop yeasty tear stains (in which, a lot of the problems can actually be traced back to certain foods they're ingesting).
Microchipping your puppies is not the only sign of a good breeder, it's one SMALL thing that MANY breeders do. My dogs came microchipped, but that does not mean my breeder is a reputable breeder. My dogs' parents were even health tested. That does not mean that my breeder is a reputable breeder. She does many things wrong that I didn't recognize until after I had my dogs and it was too late, I'd already given her my money for her horrible practices.
You think that one breeder isn't going to make a difference? Think of how many breeders think that. Think of how many breeders justify their actions by saying that. Then tell us again that one breeder isn't going to make a difference. Yes, it is. And did you know, that one dog has the capability of creating thousands of puppies in a span of a few years, just with her puppies going on to have puppies? And please, don't spew out any lectures that you make sure all your puppies go home on a spay/neuter contract (because, at this point, I highly doubt you do, with everything you've said), because people still do it. Just because they're on a spay/neuter contract doesn't mean people are actually going to uphold that agreement, and you'd never be the wiser if they didn't tell you, and they could breed their dogs as they please.
Also, reputable breeders don't pay for ad space. They don't advertise on free sites. They already have each puppy placed before it's even born, because they have waiting lists of people eager to buy their puppies, eager to get a well-bred dog with low chances of genetic health problems because the parents have been tested clear.
By the way, PETA is a horrible organization that Sass nor I support. Childish much to be throwing around rude comments and remarks and resorting to name calling?