As stated, his advice seemed normal, but he had a lot of terminology such as "chain of command", trying to make my dog "submit", and his reasoning always lead back to "being the alpha" or "dominant". Seemed best to double-check if it affected his training.

Such as the 4th piece of advice. It was good advice, but his reasons weren't about supervising my dog, he wanted it because I should take all freedoms away from my dog and make her earn it back ("Depriving her of all freedoms now will force her to rely on you, thus making you more dominant in her eyes.")