Lady of Mazes

I finished Lady of Mazes by Karl Schroeder yesterday. It's one of those books that starts off confusing with no explanation to make it less confusing, and then you think you get a grasp on what it's all about in the middle, and then the ending leaves you confused again.

Do authors write like this because they think it lends some sort of mystery to their story, or are they so out of touch with their own story even they don't know what's going on?

Either way I'm going to think really hard before reading any more books by this author.