"The only way dark matter can be inferred currently is through its interaction with gravity,..."
This is where theory is outstripping observation/data.
Again,
1) the outer edge of DM doesn't migrate inward due to its own gravity even over the billions of years of a galaxy's lifetime.
2) DM doesn't pile up around stars and planets and amplify their gravity.
3) DM isn't cascading into the central black hole of galaxies
4) there is an unexpected tight correlation between DM and central black hole masses.
..."recent studies have suggested a tight correlation between the masses of the black hole and the galaxy’s dark matter halo."
Every massive galaxy has a black hole at its center, and the heftier the galaxy, the bigger its black hole. But why are the two related? After all, the black hole is millions of times smaller and less massive than its home galaxy.
www.si.edu
Both matter and antimatter respond to gravity,
they have to,
it is the shape space-time.
Nowhere inside a galaxy does DM respond to gravity.
"...the HYPER model may address some of the challenges associated with developing a dark matter model, creating it was anything but easy."
Struggling to pound a square peg into a round hole.
Neurotic reflex rather than cool clinical reasoning.
This is where certainty of theory gets in the way of the actual science learning process.