He's an talented writer, but if I were to write I would actually go out of my way to make it understandable. He seems to do the opposite.
Okay, here's how to most easily think about it. The Silmarillion is written in very formal, archaic and poetic prose like you would expect to find in a religious work. The Lord of the Rings, while never inaccurate in terms of its language, is a lot less formal. Now imagine you were a person from Middle-Earth reading these elven history texts.
The Elder Scrolls works like that. The Sermons of Vivec, for example, are classic MK works that, because some people seem to find this important, are actually contained in the game disc rather than written and given at random by the same man from the same setting. The overall content of each individual sermon, and then afterwards the whole arc, is a lot more simple than people realize. People get intimidated by language they are unfamiliar with and walk away when really, it's as simple as Shakespeare: six, vilence and humanity described in the most beautiful words available for the events in the story. Even when the humanity comes from elves.
As for Pelinal, considering that god-machines are a pretty common part of TES lore and games (Numidium, Akhulakhan, Clockwork City) I don't see why it's so hard to figure that he is one. Especially considering he lacks a heart, occasionally glitches out and deletes locations, and can speak to his compatriots even when he's just a head. I think both the likeliest and coolest scenario is that he is from even farther ahead in the timeline than Skyrim and was built to fight the Thalmor. Explains why he hates elves so much, he was programmed to do so.
And another point, Skyrim Dragonborn is probably Talos 2.1 since he is a powerful Dragonborn proclaimed as Ysmir by the greybeards and starts off as an advisor. Maybe he'll be the one to achieve CHIM in the Talos sequence (because I still think it'll be a future iteration of Talos who gets it rather than the Talos named Talos.
And finally (for this post), Lady N mentioned that the cool and deep lore that actually requires thought was "unusual for games," and I think that's a problem that TES is a big help in rectifying. I try to push games as a narrative medium and TES is my go-to proof that fantasy is a genre that was matched with games in heaven because the narrative moves at the player's pace. As has been said here, if you want to explore the lore, you can. But if you don't, there's no cutscenes to skip because, oh hey, the lore is in the books. So the learning is part of the adventure.