There is no dark matter in theories of superfluid quantum gravity.
Dirac later went to Dirac sea. Gödel had already proposed dust solutions, which are fluidic.
PBS Spacetime has a video out now on whether gravity is actually random. I don't know whether it addresses theories of superfluid quantum gravity.
>>> "Gravity as a fluid dynamic phenomenon in a superfluid quantum space. Fluid quantum gravity and relativity." (2015) https://hal.science/hal-01248015/