Merari, in this instance, the lore isn't relevant since for the purpose of evolution it can be twisted, and has been in the past. The notable example being the dwemer and their 'gods' of Reason and Logic.
As much as I enjoy Skyrim, there are certain technological devolutions which seem to make very little sense when cosidered alongside the lore. The lack of seige weaponry in a world dominated by forts and castles, the lack of spears, when spears have been present in previous centuries, the mechanised sawmills, yet not a sickle in sight and I can't remember seeing a plough either, the lack of ballistas and other such weaponry outside dwemer ruins and the lack of defenses against dwemer devices. The chimer, the nords and the falmer all fought against the dwemer but there's little physical evidence of this.
And when you boil down the lore to its basics, Nirn is the product of Lorkhan and ultimately of Sithis, of change.To see that reflected just a little more could make the world seem more alive and more realistic than it does at present.
I would say that for the purposes of technology and its advancement or lack thereof on Tamriel, lore is the most important tool we have to try and make sense of things. What appears in the game-world only goes so far as to describe the world, the rest comes via the in-game books and out-game dev texts. All these things together form the lore, which is the collection of knowledge and speculations about the world of Elder Scrolls.
Im not familiar with lore twisted concerning the Dwemer and their gods of logic, could you elaborate please?
As far as I am aware the Dwemer worshiped no gods though they recognised their existence.
As for the ommissions and regressions, there also isnt any milk but we sure see a lot of cheese and cows.
Its a case of game design factors and decisions.
You cant judge things solely on what appears in-game, you have to factor lore in too and logical assumptions based on evidence.
We have never seen a printing press in a game but the abundance of books on any conceivable subject does lead one to infer they must exist.
Things like spears, levitation, teleportation and the like still have their place in lore, its not like they suddenly dissapeared from the world, just that version of the world filtered through the game that we experience.
Siege weapons do exist, they are the battlemages.
It is they who fire volley after volley of destruction and alteration magic at a city wall until it crumbles. They are defended by archers, spearmen and supplemented by healers.
Nirn may have been a project proposed by Lorkhan, but Magnus was the Architect and all of the Aedra sacrificed (parts of) themselves into it.
All Aedra (and all Et'Ada) are neither soley Anuic or Padomaic because all them were birthed via the interplay between Anu and Padomay. Some are decidedly more chaotic or orderly, but all are a mix of the two.