Carol, I wouldn't say that "White culture is "the exclusion of anyone who isn't White from the notice and experience of those who are White". Generally speaking, White people do notice People of Color. Sometimes White people notice specific non-White people, and genuinely form positive bonds to those people.

Less positively, (again generally speaking) White people notice People of Color (generally speaking) and express their fear and antagonism toward them (us) in myriad ways.

And White people (generally speaking) sometimes notice like what they notice about People of Color (generally speaking) enough to try to imitate us. And White people sometimes like what they see so much that they rip off language, music, dance, fashion, and other cultural indices from People of Color and often claim those cultural indices as their own creations.

It's been that way for generations. And the beat still goes on.