Unschooling has been around for a long time. It is a term that does not really mean what it says. I was never attracted to it in that I preferred a curriculum. But those that follow that plan do teach all the subjects. They just do it in deep context with real life. I understand the concept. It was not for me. Some of their results have been very impressive.
I believe “unschooling” is not teaching the kids and letting them learn naturally.
It’s how kids learned computer programming before the schools started teaching it.