I am right now looking for another dog and petfinder.com is a good way of doing that. But, as I look through their listings I am struck by the sheer number of pit bulls and pit bull mixes that I see. I wouldn't take one of those dogs under any circumstances, and I see a lot of people agree with me.
Or, more irresponsible people own pill bull type dogs and thus end up in some sort of rescue/rehoming situation. This does point to a problem (a certain sort of person is attracted to this type of dog) but it does NOT mean the entirety of all of the breeds that fall into this category are “bad dogs”.
If there were a way to filter out the irresponsibly bred pit type and mixes from the rest the bite stats might be quite different, but since people can’t even tell boxers from am staffs and american pit bulls it’s unlikely they could tell well bred from mixes.
And no, I own golden retrievers, but I don’t like laws that are based on a lack of knowledge and fear, whether they ban breeds or mandate spaying and neutering of all dogs, or for that matter requiring licenses for guns.