I agree with this educational style and Warren Buffet did not let his children knew about his super wealth..
Unfortunately, it's impossible for Warren Buffet's kids to not know who're exactly Warren Buffet is. If he going out with his dad, people will recognize Warren Buffet and ask to take a picture. If he entering school or playgroup, his friends will talk about Warren Buffet, not to mention there are a lot articles talks how rich Warren Buffet is.
If we give them great fortune, and let them know about this inheritance when they are very young, they will lack of motivation to learn, get an occupation, find job and work as a normal citizen in society.
Educate them, keep our wealth in secret and don't tell them about any level of inheritance in time they only need to focus on learning, shaping their own brain, knowledge and characteristic, discipline. When they are educative, matured enough, we are older enough, we can proceed things about inheritance.
Yeah, this is why most parents ask their kids to live outside when they're already turn 18 years old. It's too force them how to live alone, how to handle anything alone etc.