It's entirely reasonable to read this entire Meta post as "we had DEI programs, they were meaningful and effective, but now there's an administration in office that will use anti-trust laws to cut us into pieces unless our privately-held supports their political preferences."

I'm not saying that's the case (well, I do think it is) but if it is true, then trying to extract meaningful conclusions about the performance of DEI programs from it is a fool's errand.