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.
Um, excuse me, I didn’t say ANYTHING about these people.
I simply informed you that in many areas, subsidies at that level are available.