Oh boo hoo, go cry some more. It won't make the book any less "already written and published." And the funny thing is, you're here claiming that he made the whole stuff up and never made a character, and that he had no knowledge of the lore, it puts an egg on your face because you clearly have no idea what you're talking about, he did play through Morrowind and Oblivion and spent a ton of time on TIL, and has absolutely no conflictions in his story with existing lore. Also, you're story idea is both unwieldly and lore-breaking because you are putting up your interpretations as fact when they are, in fact, dead wrong and far less interesting than the general lore buff consensus. (Also, there were no were-crocodiles in Infernal City, Annaig was imagining a skooma dealer was one. read the book before ranting).
So my criticism is, go and ignore the books if you like, and pretend all the stuff that it effects in later games isn't there, but don't pretend that you know more and better about a series than someone who is writing for it, and in the future remember the old saw that "it's better to remain silent and be thought a fool than open your mouth and prove it."
Considering Bethesda told him partly what to do with the story and consulted with him, if anything was terribly wrong it would have been Bethesda's fault. And nothing was terribly wrong. In fact, I haven't even heard of anything extremely questionable (lore-wise) being in the novel. As far as most of the lore buffs are concerned, its very sound in the lore department (and were crocodiles, by the way, are real in TES. He did not make them up).
As for everything else, advertising isn't allowed here.
It wouldn't be so bad if the advertised "novel" sounded any good.
Seriously people, if you don't like the book that's fine, but you are not a professional author because you've written some fanfiction online. Despite what people think, it's not a grey ascetic loner typing whatever comes into his head and having it magically appear on store shelves. it's a business like any other, it's competitive and requires as much if not more regular human interaction than other businesses. Trust me, most of your "alternative novels" written now will be reprehensible after you've spent years in colleges and independent classes honing your craft, months at conventions and get-togethers to hand-shake with reprehensible bottom-scraqers from the publishing industry, and years writing a book between outlining, notes, world-building and actively doing it. It is not the cushy, lucrative non-job occupation people like to pretend it is in their little internal delusions.