"It’s those who are already disadvantaged in the labor market: black, Hispanic, less educated, poor and immigrant men. While work done by women continues to be valued less, the study demonstrates, job opportunities divide not just along gender lines but also by race and class."
Maybe these are just worse jobs. Why would you expect better educated people with a more advantageous upbringing to take these jobs? The equalization between men and women happens as women with the same talent, industriousness, and education have access to the same good jobs men have had.
But there is, I assume, something of a problem that difficult jobs that attracted women paid worse because women tended to accept lower pay. This problem should not be over-stated however. Some of the women-associated jobs are safer and easier. There's no reason to expect those jobs to pay more.
Anyway... I'm not doctrinaire on this subject, just putting it into play for you to discuss.