I could see that happening to any child treated second class by their parents. At least with my scenario it's acknowledge dand discussed. Not only that they acknowledge that there is a path to the top position. I'd guess most kids know when their sibling is getting preferential treatment, but many may have no idea that there could be a path to get ahead of that sibling, much less what actions they could take to get to the top.

The way I see it is the mystery only adds to the torture of feeling second class. It's like locking someone in jail but not telling them how long their sentence is. It only makes the experience more agonizing. "Will I get out today or 20 years from today?"