I really love how flexible the principle of “Ask Questions, Use Answers” is.
The person who is really good at improvising can just hash out the entire setting right at the table.
The person more comfortable with having something prepared, can ask more limited questions that already imply a premise like “Why are you going to see the witch of the Stinking Mire?” or even multiple choice questions like “Which of these things are in your partiescastle? A) A catapult. B) A magic mirror C) A dwarven blacksmith…”
Both of these people are acting perfectly in accordance with the rules and the spirit of Dungeon World and I think that’s a real testament to the game’s design.