I feel like you're describing a pretty EU point of view here. Which is fine!
But please understand that across the pond, we've been mixing people of various descents for so long that "white" is honestly the best descriptor many of us have. I allegedly have 5 different EU countries in my lineage and ain't nobody got time to get into all that, especially when my ancestry isn't interesting enough for me to know, let alone for me to inflict on others. Those details are just not that important to who I am today, whereas the experience I had over here because of my skin color had more sway over who I am now.