>The question is if there's something better out there and if we adopt something better, would it remove the need for all this "dark matter".
I'm not sure about this, personally I don't know enough about quantum gravity to comment on that. Dark energy is a tricky question though because it is somewhat explainable within our current theories, and it is unobservable.
> Secondly, many other areas of physics have worked this out.
I don't know why I put this. I meant to put that QFT is an example of a theory which predicts many more phenomena than it was originally invented to describe.
I don't think that aspect of the theories is in dispute? Newtonian physics well enough at certain scales, but breaks down at others. The question is if there's something better out there and if we adopt something better, would it remove the need for all this "dark matter".
> Secondly, many other areas of physics have worked this out. The prime example of Quantum Field Theory and the Standard Model
Wait, what? Quantum Field Theory suggests the existence of dark matter?