A while back there was a study published that showed a clear correlation between the size of a galactic central core singularity and the radial velocity of the stars in the host galaxy. The bigger the black hole the faster the stars, the smaller it was the slower they were. This observed correlation was irrespective to the size of the host galaxy itself, it was between the stars on the edge and the black hole.
This is curious because according to dark matter theory most of that mass, more than 80 percent in fact, is in the dark halo around the galaxy, the black hole represents only a tiny fraction of the total gravitational mass. The correlation should be between the radial velocity of the outer stars and the size of the dark matter halo pulling them along, not the central core to which edge stars should have only the most tangential relationship.
This observation doesn’t neccessarily support MoND, but it does mean dark matter has some serious explaining to do if it is to match with razor sharp precision the universe you here so eloquently describe and still has yet to do so.
So no, dark matter as a debate or a magic particle or a place holder in our understanding of the behavior of the universe at scale is far from over and nowhere near accepted as broad scientific fact, and I’m not certain it should be so framed.
The problem I most often observe is the Big Bang theory prevents many people including well published scientists from imagining why any correlation exists between the radial velocities of galactic stars and their core singularity, because so doing leads to questions about the conventional view of galactic formation, as it should. Questioning that view leads to inevitable questions about the behavior of matter in the early universe, questioning that leads us to wonder about how accurate our view of how the universe formed might really be. So observations like these become Fight Club rather than the points of tireless debate they should be until the theory is either proven or discarded and we move forward.
We should not try to protect our most cherished theories, we should try to smash them, only those which are true remain unbroken. There is a debate yet still to be had, and we should be having it, the question is far, far from over…