Well fighting dogs are bred to be dog aggressive and not human aggressive because someone needs to get them at the end of a fight and often do things like medical treatment themselves so they don’t get caught. So why would one trait be there and not the other?
It’s always the owner and not the breed because no matter what breed of dog you own, it’s always on an owner to keep people safe, sudden serious attacks are very very rare.
You get the very occasional dog that is absolutely fine and one days isn’t completely out of the blue - usually some sudden medical issue.
Mostly the dog has been an issue for a while and the owner either doesn’t know dogs well enough to spot it….or ignores it until it escalates to something so severe it can’t be unnoticed or ignored anymore. But a responsible owner would have been acting on the earlier warning signs, training, management and ultimately behavioural euthanasia if they weren’t able to make sure the dog wasn’t a danger to anyone.
Breed specific legislation done the way it was for XL bullies (and before them pitbulls) concentrates on the wrong issue, it’s not based on the behaviour of a dog or the DNA, it’s literally how a dog looks. Looking like a type of dog doesn’t pass on behavioural traits.
They knew banning pitbulls that way didn’t work on lowering severe or fatal dog attacks, they’d had 3 decades to come up with better thought out laws that could make a difference and instead, again they rushed through a knee jerk reaction that’s not fit for purpose.