What is the point of this comment? Vera Rubin's work has been substantial and important, the fact that it built on the work of others and isn't somehow 100% novel is not some big "gotcha", that's how science works. The Special Theory of Relativity built on as much of Lorentz's work as Einstein's, if not more so. Edwin Hubble proposed "Hubble's Law" 2 years after Lemaitre proposed the same exact thing, and Hubble's work shadowed the work of others like Slipher that had established a relationship between distance and redshift. That's how science works, it's collaborative.