This sounds horrible (and it is) and the article is laid out to further the meme that Christoanity is dead... but check out this blurb buried in the middle of the article -
“At the same time it highlights the growth of non-Christian faiths, especially Islam, and an explosion in the number of newer Pentecostal and evangelical Churches outside of the traditional denominations.”
Sounds like an explosion of traditional Christianity to me and the author doesn’t like that... I’m very curious to see what those number are and even more curious as to why that doesn’t warrant a better mention...
That's why I suspect a lot of them are very comfortable with the idea that they don't live in a "Christian nation."