I think that's a bit of an over simplification.
If you look back at the history of dog fighting and how pit bulls developed, proper purebred American pitbull terriers are specifically bred to be not human aggressive. They are specifically meant to be dog aggressive for pit fighting. Dogs that attack their owners or bit the handlers were probably put down. That's a hell of a selective breeding Force.
The big problem is a huge gene pool of crappy dogs with crappy temperaments bread for the last 30 years as backyard idiots try to make a quick Buck on bad puppies.
Combine that with owners that regularly don't take the time to manage an already large an animal aggressive dog, that has unexpected bad temperament, and you have a recipe for disaster.
I would own this dog in a second...
But not a damn chance would I trust him around small dogs...or small children that might mimic the former.
I had a friend tell me about this pit bulls that he raised from a puppy. They never showed a bit of aggression and he was a great dog owner. One day he looks out the back window and he has quite a bit of land and there is his two pit bulls murdering one of his goats. Just out of nowhere. Because that's what they do. They attacked the other dog in the pit or in this case the goat will work.
Probably the only fix is too regulate breeding, which is probably a good idea for all dogs anyway