They are an incredibly dysfunctional family with lots of internal rivalries, poor parenting and a strange culture of stay silent and we will protect you from actual crimes, but speak out and we will destroy you.
They really are a mess and I suspect they are so dysfunctional, they do not realise just how messed up the family dynamics are.
But maybe such a dysfunctional family is inevitable within a hereditary monarchy where your accident of birth means you have access to more money and power than your siblings and other close relatives?