There's a bizarre discussion going on here on Wikipedia about what counts as philosophy. Someone removed the 'Philosophy' category from articles, for example from Anarky (comic book character) and The Illuminatus! Trilogy (not sure what that is), and from John Dee (renaissance magician or 'occult philosopher').
It really irritates philosophers when their subject gets confused with things that are entirely different from, indeed contrary to the strict and proper definition of the term. 'Metaphysics' does not mean sitting cross-legged and chanting 'om', yet Wikipedia classifies writers like Rhonda Byrne as 'metaphysical writers'. It irritates them in exactly the way that Patrick Moore used to get irritated when people would confuse astrology with astronomy.
And while words change their meaning over time, that does not mean a comprehensive and reliable reference work should classify items according to their original meaning. As I pointed out here, the word 'astronomy' (astronomia) used to mean what the word 'astrology' now means, i.e. the superstitious and occult art. There were also proper astronomers, but they were called 'astrologers'. That does not mean that a comprehensive and reliable reference work would list medieval occultists under 'medieval astronomers', nor medieval scientific astronomers under 'medieval astrologers'. But then Wikipedia is not a comprehensive and reliable reference work, as I have argued here so many times.