Bone setters are unregulated and have no formal training. It's the same with Chinese Medicine doctors you see all over the city. There is now a school teaching Chinese medicine, no bone setting, but a person is not required to attend school. Most go through an apprenticeship and then can call themselves doctors.
I don't disregard Chinese medicine, I've seen it work, but there seem to be some who are harming patients with their lack of education. Hopefully more regulation and better training will help.
And for those who think I'm totally one sided, pro-chiropractic, I wasn't always. I was a skeptic and afraid of having someone crank my neck around and hurt me until I had a herniated lumbar disc. I was having severe low back pain, numbness in both legs and was starting to develope some weakness in my right foot and was told by my orthopedic surgeon that surgery was the ONLY option I had to fix the herniation. I ended up seeing a chiropractor because I didn't want to undergo surgery + 6 months rehab and 3 months later my pain and numbness was gone.