There are so many irresponsible breeders out there...not just this Irene Kang.
Usually, once I see the place they keep their dogs in the photos and also the condition of the pups, you can tell whether they are a good breeder or not.

The WORST thing however is that even the most responsible breeders you see out there can have something deep down that isn't right.
I know because I have experienced it.

Breeders should not breed pets for money. That should NOT be the reason they breed their dogs. They should breed them to improve the breed.

The breeder I got my dog from bred their dogs with lots of inbreeding fully aware of what they are doing. It turns out my dog has a lot of genetic issues. THis breeder in particular is quite respectable....they take good care of their dogs, but they breed for money. And in my opinion, that is the worst thing.