I agree that the rich seem to be unashamed talking about money with family. They just seem to have a different attitude towards it. I think the more often you discuss a topic with your children, the more comfortable they would be with it and let's face it, money is an essential part of living and there's no harm exposing them to these concepts, especially if it'll allow them to better manage their own finances later in life.
Pretty tough to be wanting parents to teach their children proper financial education, knowing that a lot of parents don't even know how to simply budget. Hence why it's necessary for financial education to start at ages 16 or so at school.
This. I've seen adults pay just the minimum of their credit card bills and then act all surprised when they get slapped with massive amounts of interest. Or who run out of money a week before the next paycheck and have to take loans, again with large interests. I even know people who pawn their paycheck ATMs.
I don't believe those sort of people would be teaching their children good financial knowledge. So it seems adding it to curriculum is the way. At least financial education is less controversial than sex education (another topic parents tend to fail at).