I can confirm this. I grew up on forested property in the Canadian shield with my two brothers being unschooled. For my parents, both of them hated school and hated being told what to do (mostly slow down you are making the other kids feel badly) so they just let us do whatever we wanted. We are in the Libertarian/pro liberty camp and my parents empowered us to do what we want since birth.

I had far more fun than my peers, learned how to allocate my time and learned about various fields of study. We formed a community with other local unschoolers/homeschoolers. I went to school from age 12-16 and found it to be soul draining. It is the only period of my life I spent unhappy and disengaged. It was too slow, provided useless information and generally made people regress.

I am planning to unschool my children. All of the scare tactics around socialization are so inaccurate. I just did what I wanted, which included team sports, and found myself in leadership roles often. Read John Holt if you want to better understand how detrimental school is to actual creative development. All four of my grandparents were educators of some kind and if not for that exposure my parents would never have had first hand experience with the detriment school has on developing young people