I think there is a substantial fear that any result based on genetics can lead to a result of "therefore these genes are better", at least when taken at the most surface level (the level a typical headline and widely circulated article might take). Nobody wants to be associated with such an article and so anyone involved is extremely zealous in filtering out topics that might lead in that direction.
There is still a shadow of eugenics over any field studying human genetics, anthropology perhaps more than others. Personally I think its because the concepts of race and genetic ability were rejected primarily on moral grounds, rather than a scientific ones.