I'm honestly not sure how much more I can break this down for you. I'm not trying to be difficult here, but you keep on misreading and objecting to things I have not said.

The Lord of the Rings is about lots of things. Some of those things are orcs. When I say that The Lord of the Rings is about orcs, I'm not saying it's made by orcs, or that orcs were used to distribute it, but that orcs are something discussed within the text.

Similarly, when I say that The Lord of the Rings is partially about authenticity, I'm not talking about the way in which it was written, but the contents of the work. Authenticity is a theme in the books, discussed within the text.