That’s one definition. I like “study what you want but you must study something.”. I have also seen what I call “raised by wolves” labeled as unschooling. We homeschooled, but it was somewhere between “school at home” and unschooling. It was structured, there was a core, but kid could follow there interests, assuming core was being served.
This is absolutely correct. There really is no single definition of unschooling and even homeschooling. I know families that say they "homeschool" their kids, yet those kids attend an "academy" three days a week that provides the curriculum, teaching, and homework. The parents really just make sure the kids do their work. This is very distinct from what my wife and I did -- pulling together a curriculum ourselves, and doing 75% of the teaching.