>>11465895Because like most of /sci/ they're of temperament that only respects that which they associate with information that can be proven explicitly, they're socially primed to reject the recognition of racial differences in cognition because they have strongly associated it, based on their encounters, with the fact that most people know this by instinct and are satisfied with that, not requiring a scientific description of why it's correct. Only in the West is this instinct beaten out of you.
An unbiased look at the science (biologically, not statistically) actually supports the instinctual view that human races are subspecies, but to accept it means also accepting that your instinct was right before you knew it was right in any way that you could articulate. It would require a difficult change in their conscious philosophy.
Consider that /sci/ is one of the major containment boards for schoolies, and it shouldn't surprise you that only a small fraction are old enough to have matured past this. Your reddit board is the same. Except for the subsection of them who are by their nature very conformant to their peer group in academia beyond youth, they'll mostly outgrow it in a few years.