Does this FAQ only apply to multiples who contain otherkin in their system?
It is not limited to multiples with Otherkin in their system, so other multiples and non-multiples may well find it useful. A great deal of multiple terminology and other multiple-specific information have been found helpful amongst Otherkin-Multiples and the reverse may well be true. Non-multiples may find it helpful for a variety of reasons, such as having a better understanding of the multiples in their life, or simply to satify their curiosity.