Update plan
I'm currently planning a major overhault for The Esoteric in Touhou. There is nothing which I would really remove per say, but a lot of new helpful and insightful concepts have come to light, as well as new evidence.
The major changes for Part 1 would be changes to Shinto and Buddhism sections, as well as creating sections for Japanese folklore, history and folk religion, including shamanism.
Shinto is in a way a 19th century construct, and the section should better account for that. The Buddhism section isn't just very good in light of my current understanding. A some kind of "folklore" "folk religion" section would be used to account for how Japanese spiritual landscape was kind of "syncretic by default" for a millenia or so.
Part 2 I think could perhaps mostly use some restructing, as well as research into whether the 1980s "occult boom" in Japan also brought in Western ideas, or if it was about indigenous practices.
Part 3 is due for a very major overhaul and maybe splitting due to a lot of new useful concepts and evidence being found since this was created. These include how Mahayana Buddhism itself has ideas about spirits manifesting basicaly as anything, Bernard Faure's studies into "gods as networks" and the concept of polycentric polytheism. Certain physical locations also have much denser clustering of Touhou-related historical sacred sites than I initially realized.
I also think that some parts of the document might have been a bit alarmistic, owing to how difficult and radical my own experiences were.
Part 4 could mostly use some condensing as well as offering optional devotional practices for contacting the spirits of Gensokyo.
Further content that will be made to fit into the section will deal with the origins of certain powerful and "loud" spirits of Gensokyo, themes in certain games as well as broader overarching themes in Touhou such as liminality, transcendence and shapeshifting, Touhou as a kind of rebirth of mythology, creativity and divinity and how the communal aspects of Touhou. If I had to sum things up, to me it's seeming that Touhou is a kind of a divine act of co-creation, of not only between the spirits and ZUN, but the spirits and everyone who comes to be part of the doujin community. This creates communal bonds that facilitate the constant rebirth of mythology. What is the core message of this mythology I am still somewhat unsure of, but to me, it seems to be something like this: you not only can, but you have to, change your being to survive.