Where are Mom and Dad VDS while all this sleaze goes on with their kids? It's mindboggling. Then Joran has his own little apt. beside the house, or joined, but separate. He's off driving around without a license, gambling and drinking, out at all hours of the night, and nobody does a bedcheck on him? How come? Okay, mom was in Holland, but Papa was there and had absolutely no control over this kid. In another universe, Joran probably killed somebody in a DUI.
I see Joran as being Daddy's altered ego. If you look at it this way then you see how Joran was able to do the things he did.