Why are acupuncturists required to go to school and take the national boards if a weekend class is sufficient?

Acupuncturists have to jump through many hoops in ordered to be a licensed member of the health care network. We receive 2-4 years of curriculum, we learn the language and theory of other medical practices, we have to take CPR and first aid training, we have to pass an exam and practical to prove safe biohazard material practices, and we are required to sit for and pass 3-4 medical boards. All of this before we are able to able for a license and get malpractice insurance. 

How come other health care providers can take a weekend course (1% of acupuncture training) and they are allowed to practice the same methods of acupuncture?

If dry needling is utilizing the same tool as acupuncture. Plus has the same bio hazardous material byproduct, and poses the same medical risks like puncturing internal organs as acupuncture, than those practicing dry needling should be held to the same standard of training and certification as acupuncturists.