Advanced statistics allow fans to become better educated.
You know that one guy that doesn't really follow basketball but swears that his team's seventh man is an All-Star because whenever he sees him, he kills it? That one guy is even less legitimate now. Advanced statistics in basketball have given everyone far more insight into just how important and impactful players are outside of the generic points/rebounds/assists/blocks/steals box score. Stats like player efficiency rating, usage rates, and clutch scoring have become common place in analysis and we're all more knowledgeable because of them.