Good luck to these people, hope it turns out well. Personally, I can't imagine home-schooling kids. I neither have the time nor patience to do that, which is why I appreciate teachers. Besides, I believe school is also a place for kids to socialize with and learn from their peers. I'm very introverted, but I think I would have ended up horribly social-wise if I was home-schooled.
It also doesn’t mean just Billy and his little sister Jenny learning all by themselves. Homeschooling parents often join groups where they can bring all the kids together. The kids can socialize and the parents can share responsibility for teaching and supervising.
It also doesn’t mean just the parents participate. At my local public library, the children’s floor has a huge amount of programming aimed at homeschooling families. The librarians run activities with the kids, showing them how to find books in the library for science research, make crafts together (by hand and with library 3D printers), learn about engineering by building cars and robots with electronics components.
Homeschooling can of course be done badly and we should worry about kids in those environments. However, homeschooling done right can be far more dynamic and engaging than the best public schools around. It also doesn’t have to be expensive, it just takes time and commitment from the parents involved.