Eugenics has transmogrified and implanted itself in many aspects of popular culture, so this is actually quite important to those of us who are trying to make the world a better place. The fight against discrimination and hatred is a viable means of increasing everyones intelligence, and not just the lucky few with time on their hands to navel gaze. If you work in the modern social world and don't see eugenics-influenced cultural attitudes in play, you're not looking - or working - hard enough to recognize it. That's why this story is important - even still today. Just because we made it to another century doesn't mean we're not still holding on - rather desperately in some cases - to an antiquated view of our civilization.

Perhaps we should add something about the social impact of the research?

In the UK, we had Cyril Burt, whose 'researches' still influence policy 75 years on

http://en.wikipedia.org/wiki/Cyril_Burt

This was a really nicely written and nuanced article, and your TL;DR doesn't do it justice.