eh Your right but its not entirely detached from biology. Yes race is a rigged social construct but to say there is no biological factor coming in to play over simplifies the issue. Genetics of populations show patterns of gene variations that only happen between their own ancestoral groups, for EX sickle cell, lactose tolerance, and even how people process their medications differently ALL differentiate based on these population clusters.
yea, “race” as a social label is man made, but anscestry based biological variation is real. issue is people mix up the social labels with the real biological factors.