>will write many paragraphs suggesting that science has established white people are smarter than black people (but maybe that shouldn't matter to us so much!) in his post announcing his talk

I don't think he did this? Do you have a link? The only post I can find of his that discuss race and the conference, is in response to the the accusations of racism and what it means for the conference. In which case it is perfectly fair for him to discuss the two, since that is what the whole issue was about.