> Does anyone have more content about what makes Books3 so special relative to Bibliotik?

They are essentially the same content (that is, the documentation for the copy of books3 seoarately hosted in huggingface says that it is all of Bibliotik in plaintext form, presumably as of a particular point in time.)

> This is the kind of effort that could have been done anonymously

Sure, its something each group training an AI could do independently at greater aggregate cost until someone succeeds in taking the original source down, but not only would that be costlier, but it in would involve less transparency and comparability across model architecture, or at least required the transparent, comparable trained version to be different from the full version.