All through its framed in almost Jihadist terms, there is some truth. I’d say a very sizable minority of Christians on earth (maybe 30-40%) do not live the faith at all. Its a cultural identity, and those are the people leaving the church in record numbers.
Yet when Christmas or Easter comes around, or there is a “life” event like a wedding or a furneral, even the least observing show up to church. Go figure.