I agree in part and disagree in part:

Agree - they're absolutely "hacking" education for their kids. The 1:1 student/teacher ratio and the ability to custom tailor almost every part of the curriculum are the biggest selling points--and that's true whether it comes from a desire to give their kids the best they can, or a desire to micromanage and control every aspect of their lives.

Disagree - I think it's less about "average people" overall and more about opting out of learning from and being trained by what can feel like a gachapon of teachers and administrators in public (and to a lesser extent, private) schools. It probably seems to them like, "If I wouldn't hire this person to work at my company, why would I 'hire' them to do the much more critical task of preparing my child for their future?"

None of the arguments convince anyone. Homeschooling remains what it was in the creationism-and-spelling-bee days: an ideological choice.

In other words...

  Windows = public school
  Mac     = private school
  Linux   = homeschool