You are trying to tie things together, that I don't think have anything to do with each other.
I believe Gay should have been fired, or should have resigned a long time ago.
I think DEI is good business. Having a diverse workforce is good for business. Having a homogenous workforce is bad for business.
Being very anti-DEI can lead to very bad hires. I will paraphrase Mark Cuban here, but one of the most prominent anti-DEI organizations led to the hiring of the following people:
Rex Tillerson, Jeff Sessions, Steve Bannon, John Bolton , John Kelly, Michael Flynn, Rance Preibus, Tom Price, Mark Esper, Anthony Scaramucci, Bill Barr, Mark Milley, Jim Mattis, Mick Mulvaney, Sean Spicer, Dan Coats, Ryan Zinke, David Shulkin, Don McGahn, Scott Pruitt , HR McMaster, Ty Cobb , Paul Manafort, Rudy Giuliani, Jeffrey Clark
Many of those hires were so bad they have turned into memes, jokes, criminals or general laughing stock.