> The job of a parent is to raise a child so they can know what's best for themselves and be able to handle problems without you.

Yes, it is part of it, absolutely. But in the early years there's more to it that that.

When a four year old wants to eat ice cream all day and nothing else, are you asserting that they know better?

> I don't see the evidence that most parents know what's best for their child

That's not my assertion, my assertion is that it's their job, not that they're always good at it.