Everything I wrote here is 100% fiction. Of course everyone knows that. I wouldn't say that it was satire since what actual cults say is not more strange than this. The difference between what I wrote and the occult, or the fiction associated with cults or religions, is not that I don't think it's true since they don't think it's true either. Obviously, the cult leaders don't think it's true since they made it up in the first place. The cult followers don't think it's true because there's no evidence to support it so there is no reason why anyone would think it's true. At most, if they're vacuuskull, they might be open to the possibility that it might be true, or some of it might be true, which is very different than actually thinking it's true, which is like you knowing that you're sitting in a chair right now. Members of cults and religions have to say that they think it's true because otherwise they won't be members of the group. The difference between what I wrote and the occult, or the fiction of cults and religions, is not even that I don't say it's true, while they do, because there are writers of fantasy and fiction who say, in a joking tongue in cheek way, that their stuff is true. I have two books by Sandy Peterson, Tom Sullivan, and Lynn Williams, titled "S. Peterson's Field Guide to Creatures of the Dreamlands" and "S. Peterson's Guide to Cthulhu Monsters", in which they describe a fantasy world full of fantasy creatures. In the introductions and throughout, they say that it's true. They're joking. It's intended in the spirit of fun. It would never occur to them that the reader might think they're serious. Even in Lord of the Rings, in the introduction, J.R.R. Tolkien talks about the stories being true. It's a frame to the story. Fantasy and science-fiction writers who employ this device are not trying to make other people think that they, the writers, think it's true.
The difference between what I wrote and the occult, and the fiction associated with cults and religions, is not that I don't think it's true, since they don't think it's true either, and not that I say it's fiction while they say it's true, because there are fantasy and science-fiction writers who jokingly say that their stuff is true, but that I am not trying to make other people think that I think it's true, while they are trying to make other people think that they think it's true.
The thing I wrote is the first time that almost all aspects of the occult have been tied together into one single internally consistent framewaork. Of course, there are elements of the occult that I did not include, such as witchcraft, vampires, and the magic power of crystals. Also, I was unable to include Scientology. Most New Age people strongly support enviromentalism and animal rights, while the Scientologists take an opposite stance and try to maximize the distance between humans and animals. Therefore I went with the former more common view, and didn't include the latter. However, perhaps an imaginative person could include all of these other things also. We can note that one other difference that you tend to see between the occult and cults on one hand and religion on the other. The occult and fiction associated with cults tends to be more logical and rational, and less far-fetched than the fiction associated with religion. As strange as my thing was, I did not say that the Old Ones created the entire Universe. Compare my thing with saying that not just the Solar System or the Galaxy, but actually the entire infinite expanse of the entire Universe was somehow intentionally delibrately made by some sort of conscious omnipotent entity. There's no basis of comparison. Therefore, the fiction associated with religion tends to be far more far-fetched and ludicrous than the occult or the fiction associated with cults.
No one could imagine a person actually thinking that not just the Solar System or the Galaxy, but the entire Universe was somehow intentionally made by some sort of conscious omnipotent entity. If you were to try to make someone think that you actually think this, you would have a 100% chance of failure since no one could imagine a person actually thinking this. Therefore religious people aren't trying to make people think they actually think this, since no one could imagine someone actually thinking that. However, with the occult and cults, they are trying to make other people think that they themselves think it's true, although no one actually thinks it's true. In some ways, religious people are more like J.R.R. Tolkien in that they say it's true but aren't trying to make other people think that they think it's true, then proponents of the occult or cultists who are trying to make other people think that they think it's true.
Lastly, I just want to point out that my hypothetical cult fiction could be used as a basis for a suicidal cult by saying that the group has achieved perfection like Heaven's Gate. It could also be the basis of a homicidal cult by saying that the mechanism by which the Old Ones will destroy the world includes the devoted loyal Chosen going out and destroying it on their behalf.