They are, but no one seems to expect breeders to rescue dogs.
Its like holding police to a higher standard.
If you are claming to be a rescue. And you have a mandate to SAVE dogs (a very different mandate than breeding them, though someone can do both). Sticking them in foster homes forever and telling people they have no business wanting a dog isn't saving dogs is it? I get being picky, but someone who has had dogs, has great references, has trained dogs in dog sports, is financially stable, but doesn't have a fenced yard shouldn't be told they are unfit. Or that you are a horrible person for not wanting an older arthritic dog when you are looking for a dog sport partner.
IMO (and sure ppl will disagree) a rescue should aim to help people find the right dog. Save more dogs by educating people vs alienating them. If you can't adopt someone a dog because you dont' feel any dogs are right for them, politely point them to rescues or shelters that might.
I find the 'bad' rescues are more about their own agenda than actually helping dogs. I can think of many busy (seems the good ones are busier lol) rescues that are very helpful, polite, and take time to educate and help people find their forever dog. BC rescue for example as a general rule of no kids under 10, yet we got Sport FOR Darien when he was 8. Its a very busy rescue, lots going on. Yet they had the time to see what we needed, and when they found the right dog they called.
I have seen first hand some of the snarky its us vs them rescue people. Just running a rescue doesn't mean you are good, or are a positive influence any more than breeding two dogs together doesn't make you a good breeder or a positive influence on the breed.