No dog should snap at a baby... or any human. This lady needed Cesar Millan but now frankly it’s too late — this is a dangerous dog and she is an unfit mother and unfit dog owner.
But that woman’s attitude is merely the current cultural norm: humans are a blight on the planet; animals are good and we should treat them “humanely” (PETA doesn’t get the irony). If we truly want to honor the animals, we should do as they do - hunt them down, kill them in a slow manner, and eat their flesh. That’s what they do to one another - and sometimes us.