I suppose my problem with it is the implied imposition on others. DHH didn't write that his own children are a joy. He wrote that we should be teaching others that children are a divine joy.
Kids are hard work, and they aren't a joy or a gift to everyone. When someone like DHH, who had the resources to take some of the grind of parenthood away, expounds having kids it doesn't come with "and I'll be sharing my wealth to make it easier"