And I don't.I have a book called Atheism: The Case Against God and in the beginning it has the difference between atheism and agnosticism. That is, Atheism is a lack of religion and agnosticism is the belief that you do not or cannot know god or know of god. That being said, both an atheist and a theist can be agnostic. In the same way, you can't just take everything spiritual and slap a religion label on it.
Moddex states that "The thing about my system of Kataga is that it's theoretical. Nothing can prove Kataga's existence just yet." yet Moddex also describes his theory as being scientific. So, he seems to be claiming that what he thinks is scientific truth, defended with the arguement that just because he can't actually prove it as true, that doesn't mean that it isn't. -The same defense that numerous religions have used and still use to defend the existance of whatever they believe in a defense which, if you want to be scientific (as Moddex stated this was to be), should never be attempted to be used as a valid arguement.When trying to be scientific, it is generally not recommended of one to use religion's defense to validate their ideas.
While neither any of those faiths/lifestyles/etc. nor Moddex's theory are religions, he's still using religion's classic defense as an arguement to why his theory may be correct, rather than using any actual science or scientific method which he should if he wants it to be considered as any existing science and not some faith.