Actually, there's one key word in the headline (and the story) which I don't see being teased out: "America".
This is an extremely important qualification which can't be under-emphasised. The United States has a quirky form of evangelical fundamentalist protestantism which (until the US started exporting it) basically didn't exist anywhere else in any significant numbers. In the late 70s to early 80s, it became a political tool of the neo-conservatives, which means that it's a bizarre mix of fringe religion and fringe politics. Well, "fringe" by the standards of the rest of the world.
The most similar phenomenon is political Islamism. (According to Adam Curtis, you can even think of them as two sides of the one coin.)
One upshot is that the Internet actually attacks it on two fronts, both the religious front and the political front.
The other factor which is important is that the largest (and fastest-growing) religious group in the English-speaking world is people who self-identify as some kind of Christian but who don't regularly attend a place of worship. This group is even growing faster than atheism. So the Internet may be making people "not religious", but most of those prefix that with "spiritual but". It also explains the rise of "post-evangelicals", especially among young people, in the Internet era.