That is false to the nth degree. The basis of Chiropractic medicine is based off that veterbral subluxtions are all that is needed to "cure a patient" from cancer to schizophrenia.
This type of medicine was practiced for quite sometime until chiropractors decided to stray away from that reputation.
Now Chirporactic medicine is a mixture of a wide variety of modalities that take away from established professions.
Now, this is a whole other topic to itself that doesn't really belong here.... But, I had to reply...
I have seen a chiropractor for many years, and short of surgery, it's the only solution for me.
I have some issues in my back. I have a vertebrate (near my shoulder blade area) that moves out of alignment on its own - it locks up with the next one after a certain point, and then pinches a nerve (at that point, I can barely move).
A few years after that issue began, - because of so many back injuries as a kid and teenager, one of my SI joints started to come out of place on its own. Chiropractor is the only one who can put that back in place for me....
And, starting a couple years ago, the top 2 vertebrate in my neck lock up sometimes.
A new pillow with small beads in it has tremendously helped my neck issue. And, I haven't been to see him in 5 weeks now - longest time I've managed to go since 2012 for this one particular issue.
But, without a chiropractor, I wouldn't be able to even get out of bed right now (I would have been sucking down pain pills years ago, likely, and still would be bed ridden). So, when I see people profess that they are practicing a pseudo science, I whole heartidly disagree.