Let me explain.
Currently, 4 breeds, and their crossbreeds and 'pitbull types' are banned. If you simply ban a breed, then people crossbreed and say 'well it's not xyz breed'... so the ban is appearance based, not DNA based.
However this means you can buy a cross breed or indeed a pedigree of certain breeds, and if it LOOKS like a banned type, then it is illegal, you are now a criminal.
So you go out and buy a labrador x staffy, in six months time your puppy and two or three others from the litter fits the criteria for 'pitbull type', but the other 8 don't. You are a now a criminal.. the buyers of the non-type puppies are not.
Fair? Useful? No.
So we have more illegal type dogs now because you can 'make' an illegal dog by breeding two legal dogs together.
Three of those breeds were never or almost never seen in the UK at the time of that ban - but it looked 'good' like the government were doing something useful, to ban four breeds - four breeds unrecognised by the UK kennel club, three of whom had not been seen here at the time and were not involved in any of the then recent dog attacks.
Breed Specific Legislation does not work - the proof of that is in the rise in incidents involve dogs injuring and killing. If it worked... we wouldn't be seeing this.
So how does doing MORE of a thing that has had over 30 years to work... and hasn't worked... work?
If you go back to the start of the pandemic, and listened to what dog trainers and behaviourists were saying at the rise in prices of puppies and in sales of dogs/purchases of dogs during lockdown though... we predicted this rise in dog attack cases back then.
Because the common denominator in dog attacks is... people.
People who don't understand dogs, haven't the time for dogs, haven't the ability to train dogs, who use heavy handed aversive methods they see on TV as a result, buy dogs from the wrong places, on a whim, in a rush, for all the wrong reasons.
They are the problem. They have always been the problem. Very very few, an infinitesimally small number of dog attacks, have occurred with dogs bought from decent breeders, sold to people who know what they're doing - and in those cases there is some mitigating circumstance as well, some stressful change to normal routine, some stressor on the dog.
The bottom line is, well trained, well bred dogs with responsible owners do not attack and kill people, no matter what breed they are.