Because obviously owning the specific breed is more important than their welfare or their health. I have seen way too many people get golden retrievers in the South, and usually clip them twice a year because their coat is not well-suited for the heat.
It's the same thing up north too. Some people have sickly dogs because they're not well-adapted to the cold, damp winters we get in B.C. Got nothing to do with irresponsible pet ownership, the dog or anything: just a lack of awareness of the weather.