Pit bulls should not be considered a dangerous dog no matter what the mix is. You cannot classify a breed of dog dangerous, as each dog within the breed is an individual. That's almost like saying all Italians are evil and dangerous bc of the Italian mafia.
With good genetics, training, and socialization, any dog can be a good dog no matter the breed.
With improper care, training, health, and socialization, any dog can be dangerous no matter the breed.
Ignorance is what tells people entire breeds are dangerous. If you are scared of a dog bc of the breed, then you should not have that dog or a mix of that dog.