I was about to post roughly this comment. It may not be that companies don't believe in DEI. It might be they're just afraid of the Trump-hammer if they keep their DEI program.

Check back later to see if they've stealth kept most of the DEI stuff. Basically they can pull a trump here - Make a lot of noise, then quietly reverse themselves without mentioning it.

Trump says a million things, and the possibility that a company would actually have legal issues with DEI is low to possibly zero, so it's very unlikely due to that and much more likely due to wanting to follow the political trend (due to internal politics and shareholder push). If companies truly were afraid of legal action you wouldn't have ones like Costco bucking the trend and not changing their policies after their shareholders continue to support DEI.