Why is being "too thick" considered to be a bad thing in Royalty?

The film was a fantasy of course - a fantasy set in history - but, in the context of the film, the young prince was presented as being the one with by far the most royal presence, style and grace.

"Disfunctional" - actually I'm not sure I know any families that aren't "disfunctional" when you really get down to it. And that is not meant as a criticism of families as institutions. But the truth is just about everyone is what someone else would consider crazy, in our own way.