That France, indeed all most all of Europe continues to be hostile to their Christian heritage, opens the way for Muslim fundamentalists who "take the jobs that ordinary Europeans refuse to do."
Christian missionaries who have spent more time in Africa and Asia have been aware that that Europe, with all of their beautiful churches and cathedrals, have no knowledge of Christianity and are openly hostile to any public mention of faith.
All of it is owed to European liberalism, and it's anti-clerical roots. Marx did a great job with them.