I lived in Alaska for 10 years and was able to meet Susan Butcher on a couple occasions. I wouldn't call her an animal exploiter. She raced for her love of the Alaskan wilderness and for her love of dogs. These dogs are bred to run and pull. I have a sled dog. Running and pulling is all they want to do. Her dogs were happy, happy, happy, happy dogs.
Everyone I know in the lower 48 who has dogs that hang out in their backyards if the owner has one; if not, they're stuck in a house/apartment all day. They get to go on three 30 minute walks a day. I bet most of those dogs would give their right paws to have been one of Susan's dogs.
That's not a dog's life. Susan Butcher's dogs lived in packs and ran in packs and played in packs. They loved racing with her. I've seen these dogs several times.
So no, I don't think we should be happy she's dead. I think that's a bizarre thing to say. I, for one, am quite sad that such an amazing woman is gone.
It's absolutely true that several Iditarod racers are not good caretakers of their dogs, and they race for the media attention. Susan Butcher, however, was not one of these people. She was all about her dogs. She was very active in the Alaskan community in regards to education, animal welfare and training.