Its a con that is trying very hard to become legitimate.
Chiros started as a scam, continued as a scam, and are now a widely accepted scam. The legit work they do is often just physical therapy.
Just go to a physical therapist.
It's a con like osteopathic "medicine". D.O. should be shunned and rejected because it's pretending to be legitimate and/or legitimized.
Its such a scam that professional sports teams all hire chiropractors to work on the bodies they invest millions of dollars into each year.