God it's going to be kind of true, we still have some hidden chambers to crack into and they probably have some "ancient knowledge" but the knowledge is going to be like "did you know our king is actually descended from the gods?" And "you deserve to be buried with these slaves, remember, only certain people go to heaven!"
Like the ancient secrets they consider important are going to just be nonsense to us.
It could be really important to us. Like what if they add to our knowledge of an ancient Egyptian deity that Marvel can include in a spinoff or next season of Moon Knight? That’s important to me: an ancient secret that could improve my future life