Because there's a thing called cultural capital, and it's not well shared in society.

The Internet is full of free knowledge. Everyone who's willing to learn can find a multitude of sources to do so. I don't feel privileged because my father happened to love reading. If he had a collection of wines or coins, or legos would I still be considered to brag about it?

I hope HN won't turn into Twitter where everyone finds something offending all the time.

Accessible knowledge, educated surroundings and internalized behavior (read: habit) to self-educate are three very different things.

Bourdieu is a good start on these topics.