I went to a chiro for neck and shoulder pain regularly for a couple of months. I felt nominally better for a couple of hours after each session, but then the problem came right back. They also told me to stretch, which was obvious.

Took a trip to a doctor and got a useful diagnosis at the first visit. So I would say no, going to a chiro does not prove it to be more than complete BS. They stretched out my tight muscles/tendons which gave me minor temporary relief. Woohoo.