Correct!
Although some people get more or less mileage out of the consistency of lists, as well (and various hacks of AW do this to greater or lesser extent). For instance, making all the names in their gameworld sound like they have the same flavour can be important to some people, and sticking to lists can accomplish that. You could also be making some kind of statement with the various lists ("Only people from the Rich playbook have the option to be "Fat" in my game", "Only people who work in the verdant fields have the option to be tall", etc). I don't think DW does this all that much, though - the lists seem to be a grab-bag of stuff to inspire you most of the time.