Firstly, I'd like to say that the term "doctor" is not solely reserved for medical physicians. A "doctor" is a person who has received a Doctorate degree, whether the degree be Ph.D, Sc.D, M.D., D.O, D.C, D.P.M, D.D.S., etc... Doctor means educator. Medicine, Osteopathy, Chiropractic, Podiatry, Pharmacy, Dentistry, Psychology (any many others) are all specialized/Terminal branches of education. Anyone with a doctorate degree is first and foremost an educator. They possess the knowledge to inform others in a competent fashion about their specific field.
Many people with doctorates (for the exception of those with research-based degrees) may choose to practice their specific field (practitioners). This is where the term doctor has been skewed. Doctors of Medicine, also termed medical physicians, are health-care professionals whose scope of practice is focused on the diagnosis and treatment of disease and injury, primarily through the use of drugs and/or surgery. This is what the general public thinks of when they hear/see of the word "doctor". Medical physicians are widely accepted as the only people to be correctly called "doctor". Obviously, this is a misnomer. For a long period of time, medical physicians were the only source of health-care treatment because at that time, there was not very much research done on human health. Dentists, who are Doctors of Dentistry, are doctors who focus on mouth and tooth health. They were not referred to as doctors, rather as dentists. This was not because they weren't themselves doctors (they of course were/are), but because it was just easier and more common to say dentist. Podiatrists, or Doctors of Podiatry, are health-care professionals who... (You get the picture). All health-care practitioners holding doctorates are REAL doctors. There is nothing fake about any of them, after all, how can there be? All of their degrees are from schools that are accredited by the department of education, aka, THE GOVERNMENT. All of them must pass state exams in order to gain licensure. The only legitimate argument about Chiropractors and Medical physicians is that neither are the other. Chiropractors never claimed to be medical physicians, nor have medical physicians claimed to be chiropractors.
Chiropractors purposely turned down the AMA's offer to become part of their association because they knew they were a separate identity. As far as saying Chiropractors are "quacks", that is a completely uneducated statement. Chiropractors are physicians who receive nearly identical education as medical physicians, the main difference being pharmacology and surgery. 1) Chiropractors take the same amount of course hours in all of the same basic sciences (chiropractic students take more hours of anatomy than do medical students), and overall, more class time hours. Chiropractors have to take a four-part board exam in order to gain licensure... If you cannot see the progression of this by now... So to say Chiropractors aren't real doctors, that is completely untrue. 2) To say that is to say Podiatrists aren't real doctors, Psychologists aren't real doctors, Dentists aren't real doctors, Pharmacists aren't real doctors, and so on... Clearly it isn't a true statement. Again, the only valid argument would be to say, "3) Chiropractors aren't real medical doctors", which is completely correct!! Chiropractors, nor any other doctor (besides medical of course) claim to be medical doctors. To do so would be ridiculous.