The author is quite right. Many homeschooling moms are possessed of a primitive and unhealthy zealotry. "Mother" may be another word for love, but as children age they need to explore the outside world. Learning isn't simply about parroting rote answers; it's about asking questions and getting real discussions. Too often, homeschooling discourages this.
This article is a barbed, but needed dissection of the drawbacks of homeschooling. The author knows that even when it is well-intentioned, fundamentalist homeschooling is an educational landmine. It demands total cognitive affirmation from offspring. Students don't so much learn as recite parentally-preordained conclusions. Kids deserve better.