An impression I get that arouses some anxiety over ESO is the idea that Skyrim was "good enough" and that ESO will be a good game if it is like it.
Even if you've gone and made a [insert masterpiece of the genre here ideally Morrowind], then it isn't wise to believe your efforts before were "good enough". But if the previous game was as broadly appealing yet generally dissatisfying as - some would claim - the most recent TES game(s) has/have been, and you're trying to make a game that really occupies an entirely different genre and philosophy, then there's really no artistic merit in grasping at all the points that market statistics and focus testing suggest will sell. And lore is artfulness, not just a load of facts that we claim occupy the Series Bible.
Rant over. Commence apologetics:
Elder Scrolls Online will contain "lore"*. ZOS have been clear on that. Some of it - sheer probability suggests - will actually be good. The rest of it will be more flesh on Tamriel's bones, to be trimmed off at your leisure if it is unsavoury and left on for ballast if it doesn't disagree too violently. And that in my view is as much "fitting into the lore" as I can expect.
*specifics of this, unsourced because I'm lazy: there will be books, and a good deal of new ones - I think the figures they gave roughly resembled the amount of texts in the most recent few games (around 300). I don't know if this is just new books or total books present in game. We know some of them, through leaks linked above or releases on the ESO official site, and The Worthy Ar-Azal is pretty good imo. They aren't inventory items as far as I know - once you've read a book the text is permanently available in your "journal" or something. A gameplay note of little consequence.