Considering that the “voodoo”/“crystal healing” stuff comes from the very source of chiropractic, I would opine that it’s the evidence-based chiros that need to disassociate themselves from the name and heritage of chiropractic by calling themselves something else.
I would never go to a chiropractor, good or bad, because I feel that that name is, at its heart, directly associated with the pseudoscience of the bad chiros. I might, on the other hand, let myself be referred to reputable “spinal manipulation therapists” who had taken steps to distance themselves from the pseudoscientific roots of chiropractic by dropping the name.