You mean I can’t say “I don’t buy it” because the great majority of contributions to culture and science in the West came from people NOT classified as “POC”?
Simply sounds like a typical case of a Leftist Librarian to me, and there are plenty of them.
I remember forty eight years ago when some radio stations often carried an information ad, that told of some great invention used every day, and it always ended with the name of the person who invented it, and the words,”..A black man.”
I can’t remember any of the inventions today.