Vera Rubin would approve. Despite making a lot of the critical rotation rate measurements on spiral galaxies [1,2,3], it seems as though she was never particularly happy with the interpretation of this result as dark matter:
> "If I could have my pick, I would like to learn that Newton's laws must be modified in order to correctly describe gravitational interactions at large distances. That's more appealing than a universe filled with a new kind of sub-nuclear particle." [4]