Ponders dogs were domesticated from Wolves, yes but I think the point Minimu is making is that Wolves still exist, not all of them became domesticated. Like all species they each have personalities of their own. The wolves who wanted to work with humans to gain 'treats' became the domestic dog we know today. Those who preferred to work as a pack and stay away from us, stayed the wolf we know today. Thus her point still stands. The dogs/wolves our pets were bred from many, many years ago learnt via positive training methods and chose to work with us for rewards. I'd rather my dog work with me because he wants to than because he fears me.
New studies have also shown that years of domestication have changed the dog and it's behaviour so far from it's wolf counter part that even feral dogs do not behave the way wolves do.
The research on dominance training was also flawed right from start. It was based on packs of captive wolves. Newer studies have revealed that captive wolves behave very differently to wild wolves and many of the aversive training methods e.g pinning the dog down by it's neck or causing pain, that are used during dominance training are not what the wolves would use to teach young, rather they are only ever used in life and death situations.
I'm sure I've missed loads out, but a little Googling will help explain what I mean.
Applying common sense works too. For example my dog wants to get through the door before me, not to teach me he is boss, just because he thinks his walk will start quicker. He is 'trained' to pull me through the door because he is rewarded for doing so. He pulls, his gets out of the door. Thus in his mind he has been rewarded for pulling and will repeat or he pulls, we don't move. The reward has been taken away. He stops pulling and walks calmly, he gets out of the door. He has been rewarded for being calm. He repeats the behaviour.