Originally Posted by
Super Black Man of Steal
Because Minecraft doesn't have any content. You don't mean direction, you mean content.
You can have content and still decide what content to do and in which order, like in WoW. WoW has content, but you decide what direction you take. You can start a character, and go to whichever zone you want and quest in whichever area you want to. That is more true now than ever, because of how level scaling works. Hell if you want to you could also grind mobs and spam dungeons. Nobody tells you how to level. Everything gives experience. You could pick flowers to max level and stay on the Wandering Isle if you wanted to.
So it clearly isn't about direction at all. A sandbox is a playground where you create the content. It's the equivalent of staying in Duskwood and roleplaying as part of a Worgen cult and ignoring all of the content the game has created for you. That is not a matter of direction, but a matter of content. You ignore the content that is available and make your own content. The players are the content.