So having fewer rules supposedly leads to more creative children, but do those kids do well later in life? Article doesn't say.
I'm basically sympathetic to the more "hands off" parenting style being discussed. But the article really doesn't make its case.
Is having no rules a steadfast rule? Chew on that one for a while :)
And while you're thinking about that, realize that most children growing up in poor environments don't have many rules to follow. Few people would consider poor communities as bastions of creativity (not to say there isn't creative things happening in these communities, just they are not perceived that way).
The problem with this article and others like it is the subjects - children - are not one thing in a vacuum. Some children will thrive in a structureless home life. But most won't. Some children will thrive with rigid structure. But most won't. So what's the answer? It depends on the kid. From my experience, most children need some sort of structure in their lives. They simply don't have the faculties to deal with the complexity of how life is today. That's what the parent is for. But to go overboard with rules generally doesn't work very well either.
Children are complicated things. Just as adults are complicated things.