Dark matter remains a snipe hunt. Milgrom gives something to look for that is but a modification of classic physics. Continuum physics, if you will.
I thought the stars were held together by a galactic "sky hook". Just a bigger version of the one we used to hold our tent flaps up in Scouts. Never learned to use it myself. I was always off looking for the "left-handed smoke diverter," which nobody ever remembered to pack.