This cat's owners need to know there is no magic forumula to keeping mats away, except working at it.
I agree with you that shaving is not an acceptable option, but for people who get Persians and are too lazy to groom them properly it's often the only answer. At least it alleviates the discomfort the poor cat feels.
Without exception, every Persian/Himi that we get in our rescue is a matted mess, often to the point that the cat cannot move at all!!