Because, you know, having that much children, you are probably a bad parent.
Of course, it's not a bad thing that they ensure that there is, in fact, no obvious problem home. It's important to watch for the children, they are the future of your country.
But in his case, a wealthy entrepreneur, his wife is a nurse, with the biggest house I've ever been in, and one of the happiest family I know, they still visits every couple of months, seamingly looking for a reason to piss them off.
It looks like (and it's just my opinion) they can't accept different form of life standards.