That one understands very little about microbiology but insists on educating everybody else about it and the other understands that there is far more to preventing dog attacks than getting rid of one breed. In truth, if you listen to yourself, you'd realize that those who propose breed bans are of a similar mentality to the anti-vaxxers.
Let's say you get your way and ban pit bulls. Then what are you going to do about "Springer Rage"? You going to ban springer spaniels and tell all the people that don't want to ban that breed that they are like "anti-vaxxers"? Banning a breed isn't going to fix the problem. It won't get rid of the breed, it will only make things with that breed worse. At the present time, people who do love Pitt bulls are continuously breeding them to be more evenly tempered and over-all better family dogs. It doesn't take too many generations of animal breeding to obtain a specific trait that you are looking for. But this is all complex and the "perfect world" that we all wish for is never going to be obtained. In the mean time we will just have to have spats about it on football message boards.