20 years ago, Dungeons and Dragons started getting a bad reputation when a kid with schizophrenia committed suicide after playing the game. Anti-gaming advocates tried to make a case that the game had driven him, and others to break with reality. It was shown to be not true, and that gaming was beneficial because it was a social activity. However, SOME individuals who had personality problems were drawn to the game.
I think the Bible, and Revelations, are like that. Most people read those sections, and perhaps they believe them, but don't really do much about it. But a few take it way too seriously, and those are the one's we see on street corners with signs. It isn't the Bible that makes them crazy, as crazy people they are drawn to certain, extreme things.