Definitely not balanced trainers. I can testify to the fact that the dominance training doesn't work. Have two dogs, one an older dog suffering from Cushings, which does make him a bit 'grumpy' at times. The other a youngster. At times my youngster will get a bit 'over the top' with my older dog, resulting in a little growling. I just use either my click/treat or if not handy, a quiet 'shush boys' and leave them alone. All the anger vanishes and both lie quietly down.
Partner is still a bit 'old school' leader of the pack. Strides in yelling and bellowing at both dogs. Result the anger issues escalate into, as happened the other night, almost a fight situation.
So much for the 'leader of the pack' - it just doesn't work, not at all, not one bit! Positive Reinforcement Training is the ONLY right way to train a dog. And hopefully misguided partners!