I don't know haw many more ways to say this to get it to sink through your thick skull.
White GLO is totally offensive, especially to our non-white members.
Historically White is not any better, especially since most NPCs have been "integrated" longer then they have not been.
Predominantly White still implies that we consider white people before other races.
If someone asks you not to use a spesific term because it's offensive to them, the normal human thing to do is to stop using the term.
PS...to use your own argument, you're not white, so you can't tell us what we can and can't be offended by.