He was a rebel who stood his ground.
While there haven't been any studies on race because of political and ethical concerns. There have been studies that show certain SNPs do match IQ levels. Huge and comprehensive IQ studies are being performed in East Asia right now, and they don't have political correctness social norms to hold them back.
20 years from now, I think people like rushton will be looked at in a different light. He may still be looked down upon because of his racist comments, but he, and others, that argued the case that personality and intelligence are highly heritable traits are going have their opinions elevated to the mainstream.