Reminded me of the arguments still going on about ‘whether this is true or not’ in the sense that the mathematics is painting this more accurate picture than what Newton’s math painted, but the math can’t explain most of the universe’s lack of observable mass/energy, so there might be some higher level of mathematics that describes a different but ‘more true’ state of events.
I think you might be getting at MOND here, but so far, some other observations seem to indicate that the lack of observable mass are actually clumps of some type of matter. Because not all galaxies diverge from the math. Many do, but not all.
The inconsistency points towards an actual type of matter as opposed to systematic error.
I had never visualized it this way in my head before, and it all makes a lot more sense now. Highly recommend!