The person whose dogs attacked Siggy should not own dogs, especially if this kind of thing has ever happened before. And those dogs should be evaluated and probably put down if they cannot be rehabilitated. Sounds harsh, I know, but I've no tolerance for the kind of negligence and/or abuse that leads to dog attacks, and although it's a shame if the dogs cannot be rehabbed, it's not worth the risk for them to be allowed to continue as they are.
That is the biggest thing is there is a lot of incorrect information surrounding Breed Specific Legislation. BSL does create this sense of false security, but unfortunately the kind of people who have killer pit bulls can easily have a killer rott or German Shepard or husky. Or, as fashion demands, more of these rare breeds like Fila Brasiliero or Cane Corso or boerboel which were actually bred to be highly suspicious of strangers. These breeds aren't that rare anymore, partly I suspect because of breed specific legislation, and you can find quite a few of them in shelters. They have the same tough guy look as a pit, but are much much bigger. Is the answer to just keep banning dog breeds? I don't think so.
It creates, as Todash said, a false sense of security. It has been shown that BSL is not effective in stopping vicious dogs. It doesn't lower dog bites, and it doesn't stop maulings. It wastes tax payer money, and there are a lot of countries and municipalities that are over turning their BSL.
I think stopping people that foster aggressive animals is the answer. Strict dangerous dog laws are actually effective at reducing bites and maulings.
I get a little cray cray about the subject, because I have a genuine affection for pit bulls. Actually I like bully breeds in general. And all of this being said, they are not a breed for every one. It's kind of a shame that they have gotten to be so numerous.
I've been bitten by a Shih-Tzu, a Yorkshire Terrier and an Alaskan Malamute-X-Husky. I've been chased by Doberman Pinschers (2 together). I've helped rehab a pitbull a long time ago. I know pitbulls that are wonderful, sweet animals. I've known them. I've had my hand taken into its mouth by a strange pitbull I'd never met before, so I slid my hand out of its mouth and scratched its ears out there on the street. It was a goofy dog.
The problem is with the individual dogs and how their owners raise and handle them. The problem is not the breed. It's the little yappers that scare me because those puncture wounds from their teeth don't heal well.