$44K for 7 people will net you all KINDS of subsidies in CA, at least. At the minimum, reduced electric costs(which are already inflated due to “tiers”), reduced gas and water, free breakfasts and lunches at school, energy efficiency programs which sometimes include energy efficient appliances, and possibly low cost medical insurance.
They don't live in California.
Why do you assume the negative? This is a decent family that's clearly raising their children well, to work together and do so happily. They've been married for many years. They're building a house. They have learned a few things about how to raise a lot of kids on a small amount of money, and that's an important piece of knowledge since financial reasons stop many people from having lots of children. Now, with a spirit of entrepreneurship, they're sharing their knowledge with the rest of America. What's not to like? These people show the spirit of America and I salute them.