Quite! You only have to look at the Stately Homes thread to know how deeply damaging it is to have a Golden Child in the family dynamic.
Anyway, in the trailer, he's not complaining about it and saying he's only just found out. He's stating is as fact. When the documentary is released and we have the context around the statement, we'll know what he's talking about.
It's amazing how many opinions people have on this when they don't know what's in it and haven't watched it. They seem quite happy to be guided by the media and what they want everyone to think about it. They've certainly got everyone's knickers in a twist! So well done to the tabloids!