There is no end to Baldur's Gate 3. I'm convinced of it. Trillions of years from now, when the universe has entered its dark age and all trace of light and heat has left it, the last event that will happen is someone making a Reddit post about how, if you repeat some ludicrously precise series of inputs, you can get Astarion to recite the entire John Galt speech or something.
Hey, it might be in there. But if it is, it's likely hidden behind an "IMPOSSIBLE" flag. Turns out, there are numerous forbidden scenes cut out of BG3—like Karlach's notorious fourth-wall break—that are dummied out of the final product by a flag in the game's files that literally marks them as impossible. Never to be seen, only speculated at.