lots of bad info and unfounded bias in here... not really worth addressing it point by silly point but some things to consider:
1 All practitioners in the medical field fall somewhere on a continuum between "bad and good." An MD label does not by default make someone more competent.
2 If you think DCs are not medically educated think again and review their educational requirements in relation to MDs and PT/DPTs etc.
3 If you think DCs are not "doctors" then ask yourself what the D stands for (yes I know is academic but then return to step 2).
4 If you think DCs are quacks then ask yourself why probably every top orthopedic center in the country has a DC (or more) on staff.
On a personal note regarding the "go to a DO instead;" I did that once and because he could script out meds that was clearly his go to approach. Not good medicine to do a couple adjusting moves and then write a script for pain and swelling. But I'm not silly enough to think "well that means DOs are pharma quacks..."