I agree that owners need to be educated. Unfortunately, a lot of people who acquire these breeds are more interested in defending their right to own the dog than in actually training it.
If my friends and their untrained, intact, 1-year-old Staffordshire Bull Terrier are any indication, there is a lot of ignorance out there.

These are the people you would think of as "good" owners for the breed, but the truth is that they spend a lot more energy being angry about BSL than taking responsibility for their dog (who is about two months away from killing their cat, IMO).
This goes for so many breeds, though. Not just bullies.
I think dog owners should have to take a test!