This is the first time I've seen something that at least targets the action rather than generalized "dangerous breed" legislation.

While I agree many times it is the owner's that are the cause of the aggression, I also think that some dogs (not breeds - individual dogs), can be snarky with people outside of their immediate family. I've known several owners that have done everything they could to deal with aggression issues with their dogs, but it hasn't always been 100% effective. I don't know if it is bad breeding or personality quirks, but not all dogs can be 100% trusted with strangers. Many dogs have to be managed for their entire lives and not allowed access to people outside the immediate family.

At least this is a step in the right direction - punish the deed, not the breed.