The title is a bit of bait, as well as the carefully chosen goofy photos. From what I read in the article, they are just rich people that think people should have more kids and are doing that themselves.
That being said, if the elite think that everyone should have more kids, they should stop getting so much of the economic pie for themselves and sharing a bit more (pay higher wages? pay their taxes? don't go laying off people any time the economy does a burp?)
A lot of the people who have only one kid would love to have more, but they are afraid of doing so because of economic reasons.