An observation, this is not specific to race or gender but human nature.
My career was based around working for the largest bank in the world, it was a tough well paid Darwin environment and you either delivered or did not last long.
However in that environment I noticed over the years a trend, we still had useless over promoted people.
Within a large corporation there are many departments and roles. Most of these roles came with hard targets that could easily be verified. For instance:
Sales: Who much do you sell
FX / Market Trader: How much revenue do you make
Project Manager (my role): Project delivered on time and on budget.
Etc.
It's no surprise that the people who "couldn't" avoided roles like this as they would be found out fairly quickly. Instead these people would gravitate to the roles that did not have hard targets and were more difficult to judge performance wise.
HR and Training being the more obvious ones. There are good people in those areas but it can be quite difficult to prove if someone is good or under performing, and if the latter you run the risk of being accused of some form of discrimination. So there is a reluctance to treat these roles the way you would an FX dealer who is not meeting his targets.
To my point, DEI is just another woolly role that does not have hard targets and so entices people who maybe average or below to go for those roles.
If for instance a DEI person is told that the company must improve it's recruitment in a certain demographic and it hasn't, that person can blame HR, or the line managers for not listening, and to some extent they maybe right. Of course if the company succeeds that individual will not doubt take the credit even if it was other people.
So major companies have created roles that some might say are non jobs, just so they can hire people who maybe from a particular demographic and to allow said company to virtue signal.
My best work friend is Nigerian, like me he spent his entire career in the roles that had hard targets and he excelled, he got higher up the ladder than I did. If you told him he was the DEI hire you would be holding your teeth in your hands.
As I said at the start it is human nature to gravitate towards jobs you can do, it's not because you are black or gay it's because you are human. If companies are stupid enough to create non jobs I don't blame anyone for accepting them.
I think this is what is really worrying the left. Some companies are starting to realise that that their policies and DEI roles are just not beneficial to their profit margins. That doesn't mean that they should ignore certain demographics it just means that there are other ways to ensure people are treated fairly.
And if that means that some demographics are under represented then so be it. I don't hear anyone complaining about the lack of female refuse collectors.