Yes, the players in baseball are a diverse bunch. Teams have embraced that because they would be missing out on great talent if they didn’t.
The real issue will be how team owners and front offices hire staff. Until diversity policy came into being, staffing was almost exclusively white men. Now we have black and Hispanic managers and staffing, even a few women on coaching staffs and in the broadcast booth (yes, most of those folks are team hires, too). Minorities were nearly or completely absent from those jobs, not too many years ago.
Team owners are largely old white men (although a few teams have ownership groups that may include a minority or two). Without a diversity policy, they will be free to going back to hiring mostly white men.
It’s no surprise that MLB has willingly eliminated their diversity policy, since that policy is directed by those old white guys who were basically forced to adopt diversity policy some years ago. Their statement that they will continue their diversity policy, even it is now officially “off the books”, is just lip service to try and make themselves look good.