I think you’ve got the right conclusion but you’ve drawn it from the wrong methodology. I would suggest that white women are ‘getting ahead’ because they are over-represented in the middle class. A group that contains white men, white women and BIPOC of both sexes.
What you’re seeing as a push up for white women is actually a middle class push in which minorities are underrepresented. There are plenty of middle class BIPOC folks doing quite well out of it too, many of whom write on this platform - but the reality is that the identity movement leaves behind the economic arguments in favour of talking about systemic oppression and the groups begin infighting.
Those who need the most help. The poor/disenfranchised are predominantly white (numerically) by a factor of about 10. But if you are Black you’re ten times as likely to be in poverty. What identity politics is doing is taking middle class people, dividing them by skin colour and insisting BIPOC people occupy the bottom rung on the ladder. It then fails to understand why the working class move to the political right under the flattering tones of the latest demagogue.
I agree with your article but your methodology has created the conditions under which the right wing flourishes. That’ll be bad for women and minorities.