There are more than a few spots in my home state of Texas that are functionally “Whites Only” already. Go in there as a poc and you won’t get served. You might not even be allowed through the front door. “Kung Fu Saloon” down in Houston (most diverse city in the country!) has had reputation for not letting brown people in for years.
The DEI shit is about inflaming the white nationalists who think even their little pockets of outright segregation aren’t enough. We’re approaching the idea that any place which isn’t “whites only” is somehow stealing something from a white person.