I am not learned, but I guess I can help a little.
Prof T writes the LOTR and the Silmarillion as though he is a chronicler of the long gone past events. I think he assumed the position of a scribe who somehow found a scribt of ancient text written in Ancient Elven Language, and translated it into plain English.
But I don't suppose Prof T is an archeologist by any chance, so the LOTR and the Silmarillion is pure fiction. Hope that would help you sleep easier at night!