Colonic irrigation: How real?

Recent advances in medical technology have fostered ease, speed and reliability in the healthcare system. Patients now find it more convenient and safe to visit the hospital, knowing that improved clinical machines are readily in place to aid as well as speedup the doctor's job. With this machines in place, more patients can now be attended to faster than when such machines were not in existence. Some of these machines are quite helpful, while some are doubtful and questionable.
In African, most rural women practice the habit of infusing warm water or herbs into the anus of children suffering from fecal impaction. This is done to propel bowel movement. Today, scientists have constructed a machine that can perform this function in a decent and more relaxed manner. This act is called colonic irrigation, a way of detoxifing the colon with mere water.
The colon also known as the large intestine is part of the digestive system, which is a series of organs from the mouth to the anus. The major functions of the colon are to absorb water and salt from partially digested food that enters from the small bowel and then sends waste out of the body through the anus.  
What remains after absorption is stool, which passes from the colon into the  rectum and out through the anus when a person has bowel movement. The colon is divided into various segments which include: the colon, a portion just after the small bowel, the ascending colon, transverse colon, descending colon, the sigmoid colon and the rectum where stool is stored until evacuation.     
According to Dr.Bamidele Ogaga of Rodwell healthcare Services with this innovating colonic irrigation machine in place, patients can now lie on the machine, which allows certain amount of water to flow into the colon, detoxify it and then flush out. This process is repeated continuously until the system is cleansed, after which a patient is then placed on certain drugs and fruits. This act depends on the ailment such patient intends to treat; therefore it is not meant to propel bowel movement as practiced with the local pulp in rural areas, Ogaga said.This machine works faster and better in the elimination of waste products which are produced within the cells as well as other metabolic waste in the body.
Asked who needs colonic irrigation, Ogaga said, children and adults whether sick or healthy could go through colonic irrigation at least twice a week. Whoa!
Dr. Funke Ojomu a consultant family physician at the Lagos State Teaching Hospital (LASUTH) has a contrary opinion to this. She asserted that, the colon does not refrain the free movement of bowel to the rectum except there is an obstruction, which could be as a result of an anatomic or congenital problem.
Even if there is, a consultant's advice should be sought before soap and water enema is carried out to prepare the patient for corrective surgery.
This is because the colon is formed in such a way that allows free movement of feces to the rectum, these feces are mixed with bacteria and mucus which are classified as the major waste found in the colon, therefore no weekly cleansing is required to flush out any metabolic wastes, instead it might just eliminate the non harmful floral found in the colon. “Frequent and non recommended cleansing of the colon could reduce the non harmful bacteria which produces vitamin K and also ward off harmful bacteria's.

Dr. Ojomu said, dietary advice should be adhered to incase of fecal impaction other than embracing colonic irrigation. Taking lots of water, roughages or eating grapes with its shafts is the surest way to propel movement of the bowel.
How does one reconcile this two?