Human being have assimilated and mixed recipes and other things for thousands of years. We'd have a miserable Italian cuisine, if these bigots were allowed to run free centuries ago. The Italian developed pasta on their own. That didn't come from China. However, the spices came from the east and the tomato is a new world product.
I read about other idiots complaining of American women wearing hoop earring and wearing wing shaped eye shadow as that was a brown woman's thang. Hate to tell them, but I've seen hoop earrings in museums all over the world and that type of eye makeup on painting from Babylon to ancient Greece to Egypt -- worn by women and men (pharaohs and kings, mostly).
Of course, it happened in one of the left coast progressive enclaves that have divorced themselves from both most of the nation and reality.