That doesn't matter. There are just certain things that aren't spoiled because of their fame and/or age. Such as the aforementioned Lion King bit, Vader being Luke's father, Jesus is betrayed by Judas, Clark Gable doesn't give a damn, Bruce is a ghost and so forth. You can't be protecting people from everything.
I put it in a spoiler tag because it wasn't about Skyfall. I don't need to put Skyfall content in a spoiler in the Skyfall thread. I did it out of courtesy because some people still like to ruin things from them by entering threads at their own risk.