Yeah.
One of my biggest peeves with philosophy is that unlike the sciences, I don't think there is much of a structure to build on and supersede notable figures.
To make a comparison, no one in biology cites Charles Darwin as a contemporary source of truth. He made contributions, and then others did, and then Watson, and Franklin, and Crick, and Sanger, and so on. But no one cites fifty or a hundred year old theories as the basis of an argument.