This is pretty much true but the article is a bit basic in its conclusions. I think the world religions that are growing fastest are the most dogmatic ones where individuals are basically not alllowed to think for themselves, like Mormonism or Islam. The religions heavily police their members and get other members to also do this, they get over the apathy and agnosticism possibilities as you basically lose your family, friends and life as you had known it if you are not faithful and obedient. Crazy but simple.