I was thinking about this seriously. To me a 'working' dog in it's truest sense is a dog that is absolutely needed for it's owner's livliehood or lifestyle to survive. Most dogs don't do that anymore. Dogs who herd for trials, do weight pull, pull sleds for races, schutzhund, etc don't really count. Those are all hobbies and not any more necessary than a couch potato job. If those things weren't there, the owners would still be just fine.
Now people who need herding dogs every day because they have sheep as a business would have working dogs. Or livestock guardians who do protect their owner's flocks.
So there, I just cleared out about 98% of dogs from being real.
Not that sports and hobbies aren't fun and it's not good to let your dog do what it was bred to do.
I still think she knew what she was doing with her statement. Many people found it offensive. I did for a while, now it just looks childish. Doesn't give off the best image.