The point they’re making is that homeschooling is far more flexible (for better and for worse) than most public education in the USA. Admittedly, it’s a bit of a patch to fill in the gap, but for some kids it’s incredibly beneficial. I was in a very similar situation: elementary school sucked and was extremely boring; despite the school psychiatrist’s objections, the administration wanted to put me on Ritalin instead of proposing any real solutions. So my parents homeschooled me through middle school. I didn’t actually follow much of the formal material, and instead of followed an “unschooling” approach. It was extremely beneficial compared to getting medicated.
The USA needs education reform, for sure, but kids can’t wait for our value systems in the States to finally figure out good, flexible, and diverse pedagogical techniques.