Among the most vocal of these critics pushing back against DEI is billionaire investor Bill Ackman, who in the wake of Gay’s departure posted a 4,000-word opus on X, the platform formerly known as Twitter, that blasted DEI as “inherently a racist and illegal movement. Ackman’s lengthy thesis was later retweeted by billionaire Tesla and SpaceX CEO Elon Musk, who now owns the social media platform