Earlier quoted context omitted.
We know they exist. The point of the conversation is how prevalent they are (what you’re inflating), and how much of the behavior is attributable to the dog’s nature (in my opinion, near none; pit bulls are naturally sweet and playful).
Their "nature" is to hunt and kill things. They have the size and ferocity other breeds don't have. The fact that you have trained yours to pose for cute photos and play with your kids is the weird thing here.
That is not a nature unlike any other dog. Nor are pit bulls the biggest or most ferocious, not even close. Even a cursory glance at dog breeds reveals much bigger threats.