I have two thoughts. I’m making a distinction here between white culture and what I actually wrote, which is whiteness culture. That is a culture which believes that there’s superior value in being white or light skinned. It intersects with white cultures and many others. You most certainly don’t have to be white to align with it but most white folks’ identities have been influenced by it to greater or lesser degrees.

The degree to which it shows up can run the gamut from white supremacy all the way to the simple ubiquitous availability of whitening skin lotions in places like India.

My point is this. While there are thousand of different cultures which include white skinned people, whiteness culture’s influence in those wide ranging white cultures tends to, again to greater or lessor degrees, isolate the degree to which any of us associate with people outside our race.

This coupled with other influences like white supremacy compounds our isolation and disconnection within dominance hierarchies common to western nations (sexism, classism, racism, etc.)

My second point? Before you decide that there’s no such thing as whiteness culture or for that matter white culture, you might ask a range of Black people how they experience those two ideas. For them, the nuances you say you see might not be so evident.