People are saying it's sad that the kids don't have many toys, but what stands out to me is how desperately they want FRIENDS. Kids can survive with no toys, one toy, or all the toys in the world - but what kids really need are peers to socialize with! Play (with other kids, not necessarily with toys) is how kids learn about the world. The little girl especially seemed so sad to leave that park - I think that's why she wanted a dog so badly, she's so lonely! And even though they attempt to visit playgrounds often, the kids are not able to build sustained relationships with anyone other than their family. All very sad to me.
Also, it's probably just because I work with children from a high SES - but did anyone else notice that all of the kid's clothes were from CrewCuts. They were not wearing cheap clothes! I wonder if the producers gave them a makeover for the show or what. It seemed an odd choice for a family who is all about giving up material possessions to have such pricey clothes for kids who run around and get dirty!