I think to some degree they do fear worldwide exposure. It likely plays a huge role into why they don't promote their message via mass media. Harold Camping got his message out and made a complete fool of himself, but none the less he got his message out and had a worldwide audience. I mean he felt that strongly about the message that he went all out when he promoted his beliefs. Way back when the WT's motto was advertise, advertise, advertise, they used radio, used loudspeakers from passing automobiles, billboards, held rallies, took out full page newspaper ads promoting upcoming assemblies and conventions, caused trouble just for media attention, etc.. Now what do they do? Hand out cheaply produced magazines and invitations with spaces for a stick-em address. What's the end result?
Despite all of the hours spent preaching, nobody that knows twenty other people has any clue as to what JWs believe other than they don't celebrate holidays and show up univited on weekend mornings. Great job getting the message out McFly, oops I mean Watchtower. It's a joke. Busybody work, that's all. The last thing the the WT wants is people knowing what they really teach and what JWs really believe. Hence, there's public literature, but on the flipside there's study material for inhouse use only. Hence the deceptive answers on the website vs what those on this message board know all too well regarding blood transfusions, family breakup, false prophecies, etc.. Their MO nowadays is retention. It's a bonus if a sucker or two get swindled into the religion.