It is actually really sad how many myths/misconceptions that are stated as fact regarding children who are home educated. I HE'd all of mine from the beginning but they are deciding one by one that they want to go to secondary school. When we went for an interview at the highly selective grammar that my eldest dc got a place in the HT said that he was concerned about my dc getting up in the morning as there was a lot of research to show that HE'd children find it hard to wake up at a normal time 
My second dc to go to school said she started hating HE as strangers (that includes people on the bus, doctors, shop assistants etc) would comment on her "illiteracy" and a few even felt the need to test her reading on the spot. She said the best thing about going to school is that people now assume that she can read and write 
I hated our HE group, it was run by someone like the woman in the article, she knew it all and had to inform us lower beings. She was quite aggressive towards anyone who wasn't anti-school or who liased with HE officers from the LA and just came across as very patronizing and controlling she then had a breakdown and put all of her children in school. There were very few in the group who did not seem to have anger towards the school system and so much talk of "the poor sheep sitting in school"
There were quite a few families (the man and woman would both come) who were home educating their babies
and seemed to need an outlet for their alternative views.
It was then taken over by a lady who was a fundamental christian who attracted a lot of like minded people and the group became that way inclined by default. The group signature became "Yours in Christ..." and the narrative of the group changed to "we are so lucky that our children are being saved from bad influences". They were super strict and enjoyed very rigid, organized activities in the group meet. Autonomy was frowned upon.