I stopped watching her puppy content because it was pissing me off but I had a look today and this idiot is at it again.
She claims positive reinforcement didn't work for her puppy, explaining that he ignored her when she shouted "No" at him... but screaming "no" at your dog is not a form of positive reinforcement training, so I don't understand why she claiming positive reinforcement didn't work when she hasn't used those methods. I get the impression she has zero patience with this puppy which is why she is resorting to stupid outdated training techniques. Her solution has been to fill a water bottle with stones and shake it in his face when he mouths her and to spray him in the face with water, which apparently teaches him "right from wrong". Newsflash, moron, it only works because it startles your dog (i.e. frightens them). Eliciting a fear response in your dog is a great way to create undesirable side effects - anxiety, decreasing your dog's ability to learn (due to increased stress levels), aggression, confusion if it isn't clear what the punishment is linked to... etc etc.
I guarantee this dog is going to have issues when he grows into a big, high energy adult dog. Which was inevitable with her getting a breed like that when she has zero dog experience.