The funny thing is I do actually agree that unschooling can be brilliant for the right kids, and there are a lot of problems with the education system. I looked at moving my eldest to a school that subscribes to all this, because unfortunately due to my own issues I'm not able to provide the right environment for it to work for him myself. In the end we decided against it and I am glad because his school is brilliant for him.
I just don't agree that school is pointless. I don't think it's schools "fault" that children come out without being able to read or do maths, even though I recognise that it doesn't suit all children. For a very few then yes the system as it is won't suit them and it should be more flexible, but for the vast majority of kids who fall through the net they could do just fine at school or given an autonomous approach. What is in the way are other things. Poverty, abuse, trauma, for example. Being a young carer. Being homeless. We have a social problem far bigger than our education problem.
Support mental health properly and make it a priority for adults and children and the amount of traumatised and abused children will go way down.
Fund social services properly and give social workers actual time and resources to help families rather than giving no help and in the end having no option but to remove children far too late when the damage has been done. Make foster care more attractive so children don't suffer dozens of moves.
Better benefits system and safety net so that parents aren't drowning. CSA that isn't a total joke.
Better family courts with a deep and thorough understanding of abuse dynamics so that children aren't forced to constantly be retraumatised by contact with abusive parents. And women aren't afraid to leave violent men because they know he will murder the children (or her) if she leaves. And they are right.
Solve the housing crisis and open up all of these empty new builds to vulnerable families so that children have the time and space to do their homework. Or discover burning passions or whatever. You can't do that when you're living in a one room B&B with three siblings and your clothes always stink because there's nowhere to store them and they only get washed occasionally.
Solve these problems and you'd achieve much more as well as massively improving a large proportion of children's access to education. It doesn't really matter what format that education takes. Both of them work about equally as well for most children.