I haven't seen a black american hired in tech in a decade. The last black american I saw in tech, they hired an indian manager, and the black guy was the first guy he fired.
Since then the only black guy I saw hired turned out to be from a suburb in africa.
My experience is the beneficiaries are people with well off parents from other countries.
Or white women.
You're asking the right questions but this is what normies and right wingers alike don't understand about these sorts of initiatives because I'm trying to tackle the politicised LGBT movement myself and the mentality around that. It's not about results, it's about virtue signalling and people making themselves feel good. They don't care whether or not the policy they introduce succeeds they're just in the very echo chamber they accuse everybody else of being in and want to talk to each other about how amazing they are through their activism.