Well I'll admit I'm a little unorthodox here, but nothing is more naturally obvious to me than the idea that children belong to their parents, and I don't think there's a lot of middle ground, and I think society has gone much too far in taking away the right of parents to decide anything and everything for their children.
Nothing happens in a bubble. If a parent doesn't want to vaccinate or wants to give their kid marijuana, that's just a data point within the spectrum of the type of decisions that this parent will make for their child over the years. So we draw a few lines in the sand -- you have to vaccinate, you have to send them to school for 8 hours times 9 months a year, you can't give them XYZ to treat their autism, where does it end? Are vegan parents who force their children to be vegan dangerous and child abusing?
Besides, the fact that a parent reads a book does not imply that they will act on it. Maybe they know in the back of their mind that it's all bullshit, but for an hour a night before bed, they get some comfort out of the fantasy.