User blog comment:DragonbornMAGE/Short view on Dwemer disappearance/@comment-26474238-20121230093048/@comment-26474238-20130101021840

If the Aedra have willed for the entirety of the Dwemer to be gone, then I highly doubt they'd ever reverse such a decision. And like how the Dwemer found out the hard way, there is no fighting the Aedra. Not to mention that the developers have specifically referred to the Dwemer as being dead - not just gone- multiple times. Whether this was intentional or not, I suppose is up to the Devs to deny.