"What is that if not a form of prejudice?"  How IS it prejudice? 

Quebec wants immigrants to integrate into French culture just as the ROC expects immigrants to integrate into Anglo culture. The problem is immigrants to Quebec who expect to integrate into Anglo culture.

French-speaking Africans are well accepted in Quebec, as are Haitians. So are Hispanics, they learn French easily and quickly, and Eastern Europeans, they have no problem speaking multiple languages already.