Not really the major king or commander of the dwarves before the falmer rebellion was launced instead of losing there entire race he forfeited by tapping some crystal and the transported to anthores realm , planet or anthore universe no one knows but that mage in Skyrim in fact he could bring them back in a DLC to follow later on just a though unlucky that dwarve in Morrowind died due to red mountain Explosion Or he could possibly be alive due to Corpse's syndrom if im right that expands your life but making you weaker , And we didnt know how long a dwarves live span was
You are not understanding the mythic act.
Dwemereth realised that creation was subgradient. They were unsound with knowing to be five or fifty or five-hundred creational gradients below the divine. Their experiments sought un-creation. They sought hyper-gradience.
In the end Kagrenac collected their endevour into the Numidium.
Like all Dwemer metal is made of souls, Numidium was special alltogether. Powered by Lorkhans heart, chimed by the Tools of Creation they were going to up-gradiate into its metal flesh.
Instead of thousands down below, they would become one, up above.
It is a big giant no to Lorkhan, a refutation of the originial plan.
Where the Mundus is a tool of creation for the individual to reach CHIM, Dwemereth decided to skip all that and just go back to what was.
"doomed Dwemer folly"