The Internet cannot kill religion all by itself. It merely exposes its faults so the religion ends up killing itself. It exposes that Christi-SCAM-ity is nothing more than a slave program and is almost identical in core doctrine to communism, despite the stated core platform that Jesus supposedly offered up a perfect, complete sacrifice to which nothing ever need be added. The Internet thus explains why so-called Christian religion never sticks to this objective.
If the religions didn't have such dirty laundry regarding their points of origin, hypocrisy, and history of oppression and forcing people to abide by them, they wouldn't have anything to worry about. Look at atheism and spiritual Satanism, both of which are growing significantly with the Internet. Do you think Satanism is suffering because of the Internet? Is the Internet killing that?