Board Thread:General Discussion/@comment-27464043-20151230192612/@comment-28278649-20180420132437

The Aether is, quite literally, credited with being able to turn the universe back to it's previous state of darkness.

Also, her powers are lain out for all to see in every movie she's been in, and were explained as being neurological due to them stemming from, get this, the MIND STONE. Also, which laws of physics is she messing with exactly? Her powers, for the most part, seemingly involve exerting force and "neuro-electric interfacing". Neither of these are changing reality.

Beyond that, why retcon what's already established as canon? The Aether converts matter into dark matter, which Malekith would use in tandem with the Convergence to convert the entire universe (or at least the Nine Realms) back into one full of dark matter.