The answer is: FALSE.
Cats clean themselves daily by licking their fur. What it leaves behind is saliva! Mix in some dander, cat litter a few leaves, burrs, and fleas for show, and what you have is a mess on your hands!
Regular cat grooming removes dirt, grease, and dander from the coat not to mention addresses the issues of shedding, and matting. Healthy coat and skin are just as important for cats as it is for dogs. A Shiny well maintained coat reduces the dander which can be a breathing irritant for those who have allergies. It also reduces the amount of loose hair floating around your home.
CATS DO NOT HAVE TO BE SEDATED TO BE GROOMED! Most times they are stressed out by the noise, the smell of other animals, and the trip to your local grooming salon.
Mobile grooming offers the solution to the problem: