Which sort of invites a question:
"Shall we go to the beach today, or will we go to see Shakespeare in the park?"
...time passes...
"Oh, well, it rained. It turns out neither was a real choice for today."
It isn't like every choice we make in the real world turns out to have been real, in the sense used above. Our own ignorance, or unforseen changes in the situation, put the kibosh on what we want all the time. Heck, few who have lived through the past year f pandemic can cogently argue otherwise. So, does EVERY choice the PCs make have to be "real"?
What about when they misconstrue information, and make choices that have nothing to do with anything? Do we have to quickly make up material so that, in some way, we make those choices into real ones? Like, say there never was an ogre, but they got an idea there was one, and go on an ogre hunt. Is putting a ogre wherever they happen to be going, to satisfy their desire for ogre-hunting, railroading them into their own misconceptions?
If not every choice has to be real, why do we have such a long argument about it?