No one dares to do such studies anymore so we can conclude that the "good" has won.
https://www.cdc.gov/mmwr/volumes/70/wr/mm7015e2.htm
So it depends what you mean. If you mean there are no studies done with such partitioning aimed towards the benefit of those groups, I call that bunkum.
If you mean studies are not sponsored where the outcome is of no societal value beyond reinforcing or justifying an established hegemony or excusing discrimination, then perhaps... and good.
>no societal value beyond reinforcing or justifying an established hegemony or excusing discrimination Researchers might have hypotheses they want to test, and any hypothesis that's not "good" is not explored. Because 1. real identities and careers are affected 2. collected data isn't good enough for journals