Pretty much most of your post.
Dog attacks and killings have been on the rise after falling for years. Virtually all are attributed to this breed or similar.
I don't think anyone has died from being mauled by a labradoidle or sprolly etc.
Clearly the owners can't tell when these dogs are going to attack and have no control when they do. If they had a jack Russell that wouldn't be too much of an issue.
These dogs are inbred and were bred to fight in the first place, people note the excitement and tail wagging as they attack.
No sensible person brings that into a house as a family pet.
No-one is trying to get rid of dogs completely.
Dog warden estimates at least 30 on the social housing estate next to ours, our estate is a similar size and probably has higher overall dog ownership and there are none.
No-one needs to make up who owns most of these dogs, we can see it with our own eyes.