I think putting it in terms of "the notion that there ARE choices in life" as a dividing factor is misreading the situation.

The issue is what you do when you have made a choice - when are you entitled or duty bound to try to get other people to go along with it, and when are you duty bound to stand back and let other people make the choice. And in fact for pretty well all of us there are going to be some situations which fall into both categories.

I'd disagree sharply with any trying to resist Harry Potter being readily available to children. But I can quite easily imagine books which I would be very worried about having freely and casually available to young children.