100% correct! I have a 120 pound rottie who is one of the sweetest dogs I've ever owned, and he loves everyone. Even so, he never has the opportunity to "lunge" at someone. It is my responsibility as the owner of a large dog to make sure he is always under control, never off leash outside the house and back yard, and that the back yard is escape proof. Doesn't matter what kind of easy going temperament he might have. If someone can't manage that, then they shouldn't have a big dog. Actually, they shouldn't have a dog at all. Maybe a turtle.
A lot of people are afraid of dogs. I have seen people back away from my Golden Retriever, a breed that loves all people.