I think
@Hussar 's point (and he might answer this on the next page) is that if the Village of Hommlet is written with the plot hooks to lead you to the Temple of Elemental Evil, and you present the Temple of Elemental as a "bad place" where "bad things are happening" then there is an authored story. Because the DM clearly intends you to go to the Temple and stop the bad things.
Now, I think that the definitions are getting a little stretched and extreme, but I can see the overall point. I don't make a campaign where there is a zombie apocalypse on the rise, or growing trouble with the orcs in the north, without the expectation that the players are going to go and solve those issues. I may not know how, maybe not even why, but I have clearly set expectations in the goals. And it would be very difficult to run any sort of game where you did not do at least that much planning.