Honestly, if a black woman was saying that DEI isn't working at a company, I believe her more than I believe management. Even with a reputation for blowing up at people.
I don't think that this the narriative here. The narriative is a black woman told people to stop working on DEI. The company begged people to carry on. She says it's not working so they should stop trying.
I think that's a fair concern. If Women and POC are being encouraged by a company to use their time at work on something that doesn't work, they're asking women and POC to sabotage their own careers by diverting their effort from accomplishments the company will actually reward them for, and only asking women and POC to do so.