That’s a good formula for college, once children have become legal adults and are responsible for themselves. While they’re children, it’s up to the parents to expose them to the world.

Yes and no. I would argue it's even more important to maintain a variety of voices in repressive environments like private religious schools and libraries, especially where queer kids (as one of many examples) there may not have any access to stories reflecting their own experiences. Being that repressed is far more harmful than anything fiction can do, and I speak as that literal example there.

I owe my entire current mentality to the books and literature I found on my own beyond the parent's wishes. They're good people in many ways, but having that sanctum to explore other experiences was critical.

Most people don't go to college and even if they did, you need to start teaching these cognitive skills much earlier.