To be honest, I don't think "Dark Matter" exists. I suspect there's something wrong with our current model for space-time. I appears time may not even exist for example.
Time May Not Exist, Say Some Physicists and Philosophers | HowStuffWorks
There may be an alternative explanation in a five dimensional universe for example.
Dark matter unknown god Carmelian - creation.com
I don't have a problem with God chaining up demons in Hell. Hell is spiritual and not earthly any more than Christ's kingdom is of this world.
Spiritual beings would require spiritual chains or their equivalent. Our science is not in a position to speculate on the nature of Heaven, Hell or Purgatory. It's limited to this world. When scientists start talking metaphysics, they're talking philosophy, not science.