I believe that the poster just meant that just as home cooked meals are better, home education is better. The 90% that you claim that is not true for ( assuming that figure is correct) is anecdotal.
People who homeschool choose to do so. I guess that is cherry picking to you, but not to those parents that make that choice. It can be an answer to those who wish to make that sacrifice. But that sacrifice is not "rosy". The outcome has a better chance for those who make it work.
It seems that, that choice is too rosy for you. So be it.
It may not be true for others.
Do you think that schools should be in the business of taking over the parenting of children by this policy of encroachment of parental duties? (i.e. school lunches?)
The fact remains that the vast majority of people cannot home school and not many SHOULD even if they could. Given the level of ignorance about subjects which need to be taught few children would receive a proper education.
Few parents can teach math, languages, grammar, history, science or any other subject which has any substance to it.
Even on FR the level of misinformation, distorted information and just plain old false information is staggering.