Because it ignores the ways in which race becomes biology— that is, the ways in which racism as a social construction can come to be be embodied in the biology of groups and individuals

Because over the years anthropology has lost the ability to comment on the social impacts of race in the contemporary world.

Because it is untrue — recent studies reveal that race does actually have racial aspects

Because it does not go far enough. Biology and the body are both social constructions too.