Yes, Larian thought we weren't going to do it. But if there is even a hint of an opportunity in the game, then it is OBVIOUS that the player will try to do it in the second playthrough to see what happens. At the very least, we deserve an Easter egg for every case when the player, knowing the plot spoilers, tries to act illogically to break quests.
There are not many such cases, but they exist and the game does not react to them.
