The danger here is that you are assuming that the main dominatedness of a field does not alter conditions around it in a way that is potentially self-fulfilling

The danger here is that you are assuming that the main dominatedness of a field does not alter conditions around it in a way that is potentially self-fulfilling. What I am suggesting is that while I agree that these disparities were likely due to class differences that manifested themselves in racial and gender inequalities, we now have a world where the industry is dominated by one gender and a few racial groups. Does the present situation makes it less likely for more women and minorities join tech? Without an activist drive, the answer seems likely. A lot of what the author brings up here are forces today that makes the reversal you are hoping for less likely, unless an equal but opposite activist force is applied.