We have a border collie, and I'm astonished every day by the things he can do. He's incredible.
When he was a baby puppy, we went to a big family party with lots of dogs. My husband was throwing a stick for all of them.
All the dogs would run right up to his feet when he was ready to throw the stick...but not my puppy. He had worked out where the stick was going to be and positioned himself halfway across the field.
He didn't catch the stick tho, not once, because it would sail right at him...at which point he would strafe left, then do a big round circle up to approach it and corral it from behind. The other dogs just ran straight at it, and got there first.
He wasn't phased by what the big dogs were doing, he didn't want to copy them, or cling to near where my husband was either. & I didn't teach him any of that - he's just got shepherding in his blood, even when it's a stick not a sheep. He knows he's got to be a way away from the farmer so they can work together to bring in a herd.
So yeah. I don't like new laws or vague laws or moral panics or harm to animals, and I see why animal charities oppose it...but 'it's not the breed, it's the owner' seems just. incorrect. to me. Dogs are bred to be a certain way, it's a core part of how they exist alongside humans. Dog genetics is a whole art! "any dog can be a good family pet so long as you're nice to it" is sweet, but IMO, inadequate: i don't think any dog is beyond saving, but the average person does NOT have the capacity and skill to manage a challenging animal, and I don't mean any offence by that. It's just not what people sign up for when they think of a snuggly, chill, dopey, loveable family pet.
Apparently one of the issues with the American Bullies is that some really popular breeding dogs have either attacked people, or their children have attacked people, and yet that doesn't rule them out for more breeding in future. So yeah, I think taking breeding more seriously & doing better breed logging across all dogs (even mutts or non-kennel-club breeds) would help a lot. Its very probable that American Bullies, on the whole, are fine and safe, but it's just those bloodlines are prone to causing problems. If the breeding community had taken that seriously, we maybe wouldn't be here;
but at the same time, i feel like there's always going to be a risk of problems like this when your dogs bloodline includes dogs deliberately bred to attack stuff.