If that is the case, then how do the sparse galaxies described in the article work? In the article, the galaxies described behave aligned with unmodified newtonian dynamics. So if we consider the inverse linear relationship in MOND, then for some reason, that relationship does not occur for these galaxies. That seems like evidence against MOND.

EDIT: Nvm, parent answered similar question here https://news.ycombinator.com/item?id=29914380

Following links it appears that proponents of MOND believe that running the calculations will show that MOND predicts this.