This takes us back to an earlier conversation.
I can tell you how all this occurred.
It was early 2022. Me and my friends with whom I play RPGs had met at R's house - this was the first time we'd all met in person for quite a while, given the intensity and duration of pandemic lockdowns in Melbourne. My TB2e books had fairly recently arrived following the Kickstarter, and I had brought them along hoping to play some Torchbearer. So while R cooked food on the barbecue, I talked others through the system, a bit at a time, and thus persuaded everyone to have a try of the game. I talked everyone through PC build, and they built their PCs:
As you can infer from that account of the PCs, when the players chose their PC's home towns, we talked about where these were located on the NE part of the Greyhawk map that I had pulled out - for instance, the Wizard's Tower was in the Bluff Hills, and the Forgotten Temple Complex adjacent to the Troll Fens and the Griff Mountains.
Having done all that - established PCs, backstory, some basic geography - I then described the situation, as per my post to which you replied:
You can see how the goals chosen by the players for their PCs connect to the scenario backstory that I read out, and also in some cases to PC backstories - eg Telemere is looking for clues about his brother; Golin is looking for ingredients for explosives.
With all that established, if at the point of narrating the approach to the tower, and the rough-looking individuals, the players had indicated that they weren't interested in the game, or weren't interested in the setting, or weren't interested in the scenario I'd presented, (1) that would have been pretty weird, given the time and effort spent so far (over an hour, from memory), and (2) that would have required a conversation about what to do instead.
To make it more concrete: what sort of anti-social weirdo
lets the GM read out the scenario backstory, and then
chooses a goal for their PC related to that backstory, and then - once the GM frames the first scene - says "Oh, actually I want a different scenario?" As I posted upthread, that would be weirdly dysfunctional.