Unfortunately, the incorrect implementations are much more common in my experience. Out of the 4 companies I've worked at 3 carried out explicit discrimination under the banner of DEI.

> For example this has been pretty effective in astronomy (proposals to get time on competitive instruments) where applications with female names were less likely to be approved. Simply removing the name was enough to improve the situation

And as a counterexample, STEM hiring experiments showed a 2:1 bias in favor women: https://www.pnas.org/doi/full/10.1073/pnas.1418878112