Sure. They don't, but when they are just starting school they still don't know much about what is possible, and out there.
> No one is talk about giving them freedom to do what they want.
Little bit of guidance won't hurt. There is nothing intrinsic in child's wishes. No one is blocking their inner genius by guiding them to pay attention to learning maths instead of painting, or dancing, or vice versa.
Nobody is saying guidance is bad. The point is when the guidance become constant. It's not about some innner genius, it's not even about finding what you are are good at. It's about finding the engine that will allow you to become good at something which is a combination between many factors including parents guidance.
But it's completely lacking when parent's start pushing the kids to try out may different things almost as chores.
There is a big difference between finding an interest and then finding a career.