It takes some monumental balls to upend your game's story at the last possible second. Keep in mind the average title spans a good 10 hours of play-time - 30-50+ depending on genre and long into the hundreds for loot-grind RPGs - so if you're going to do the jazz-handed dance of "Woah there champ, alls not what it seems!", you'd better stick the landing.
Because for as much as first impressions count for a lot in life, in gaming you're only as good as the last time we held the controller. Yes, we can forgive a particularly naff final boss or infuriating level if everything else is spot on, but it stands to reason that every time you're lost in a haze of nostalgia, those final moments will come screaming back into view.
Add in the fact that many of gaming's most severe rug-pulls actively reframe their narratives entirely, and a developer can cripple any sense of replayability in minutes.
No pressure then.
Indeed, gamers are some of the most passionate entertainment fans of all, and we we're gearing up for a massive right and you go left, well... the results aren't pretty.