I think home education can work. I know a fair number of parents who are home educating from some who teach their kids to those who are unschoolers.
But I also think there are parents who home educate who are not up to the job and claim to be unschooling, but are in fact just educationally neglecting their children.
There should be an annual inspection of all kids being home schooled. This should check that children are actually getting some form of education, and not just left for example to play minesweeper all day, as one single mother I knew did with her teenage son.