Personally I think we should have cracked down much harder on the existence of these dogs in the first place. I know many of them will have owners who insist they are gentle giants and much loved members of the family, but there simply shouldn't ever have been room for sentimentality here. The longer they were allowed to proliferate as a breed, the more decent if slightly deluded and misguided people were going to be hurt and angry at having to surrender their pets for euthanisation.
The problem is, by the time all the relevant authorities on the subject have concluded their investigations and collated their data and prevaricated over precisely what defines a Pit Bull or an XL Bully or whichever other devil dog is all the rage that year, it's often far too late and the problem has become a runaway train.
Bullies not being exercised isn't the fault of the new law. It's the fault of the owners. Given that those dogs have been allowed to live, they can and should at least be exercised properly, IN MUZZLES AND ON HARNESSES that give the owner better control over a powerful dog. And yes, perhaps off lead in strictly controlled environments only. That way, while they might still be prone to lunging in attack, they can't actually do any real harm. Knocking someone (or another dog) over and scaring them half to death is probably as bad as it would get. Still not great but better than being mauled to death.
The problem is the idiots who don't exercise or socialise their dogs at all and probably didn't before the law about muzzling came in. In general they are not responsible owners and regardless of the breed they chose, they'd probably never be. These are the dogs that will go crazy and kill visitors to the houses and gardens they spend their lives locked up in. Or they go crazy in the street when they find an opportunity to get loose. They are literally living like caged wild animals most of the time, not domestic pets. And if they get taken out on a regular lead the owner rarely has the strength to hold onto them if they want to bolt. Even the well meaning idiots who buy these dogs (as opposed to the definitely less well meaning sort) find that they are far more dominant than the Instagram twats filming their toddlers clambering all over a seeminly relaxed and docile Bully ever let on. They soon realise they can't cope with the commitment of training them and exercising them, so they keep them confined largely to a crate, a balcony, a spare room or a small yard.
And then their are the idiots who do walk and socialise their dogs, but refuse to muzzle them or keep them on a leash. They are the ones who insist that their dog is just a 'mix' and not the breed it so clearly is. And just because they might look like a banned breed doesn't mean they are one. It's sly and disengenuous. They take their precious babies out unmuzzled and off-leash because they think the law somehow shouldn't apply to them. And they whine about how the muzzle is cruel, or they need to take it off for the dog to be sick, or because they struggle to breath in it, or some other such nonsense. We all see you. You are a liar and a fool.
Look, these dogs are all mixes or merely 'types', we know that. That's how new breeds come about, by mixing others. It takes many, many generations of strictly controlled breeding to get to pure breed status. But the question is what sort of mix is your dog? If you bought that dog by searching for anything with Bully or Pit Bull or American bulldog, American Staffordshire Terrier, Mastiff or Cane Corso, or a combination of any of those in the description then you knew exactly what you were doing, so don't play innocent and heartsore with us now, please.