I probably should have put 'explanations' in quotes, because I was thinking of the bogus 'biological' just-so stories that have frequently been advanced in the past to 'explain' why women should not or can not do this or that, and the alleged inferiority of various ethnic groups.

It is somewhat moot, however, as my comment is mostly about contemporary mores regarding the use of biological explanations (or 'explanations'), though perhaps I was not explicit enough. I don't know enough to have a definite opinion as to whether, or to what extent, biological explanations apply in this case.