I'd not hold your breath for it HellsAngel81
Any dog if mishandled, badly housed, needs not met, trained using aversive methods, trained to grab and bite limbs, can do some serious harm, and lots have - they make less froth-worthy news and what does hit the media tends to die down quickly, remember the police dog that had to be shot to get it off its own handler and had attacked previously? Or the one that damn near ripped a girls leg off at a rave, the handler having not warned the victim that they were going to deploy the dog (she was unware the dogs were even there!) and then not getting the dog to 'out' promptly... That's just two examples of poor handling training and housing leading to dangerously aggressive dogs, and this is by people who should know better, the more minor end of the 'crappy dog handling/training/housing' scale.
The damage that can be done when UTTER morons get a very big dog is terrifying, but it doesnt mean ALL very big dogs are a danger, it means morons are a danger. So stop morons owning big dogs, put controls on dogs over a certain height/weight combination, that specifically targets idiot owners. Make them pass a test and have to have third party liability insurance and a licence - no licence then they get 14 days to get one, second failure to licence offence =dog seized. Any actual dog control offence = dog seized and court case.
It would be relatively easy to police too as the id criteria could be figured out by a toddler - weight + height = needs a licence. Any fule can put a dog on a scales and measure its height, vs having to have specially trained officers to determine type.
That would stop them, but it would also cost much much more to achieve than this pointless ban, and it would take longer to put into action. Not what the current government (or tbh, any) wants. They want to instantly look like they're doing something, they don't really care if it WORKS of course. They've just done their best, wash their hands of it afterwards.