HN has plenty of political, cultural, and social threads. I'm surprised you haven't noticed them. See https://news.ycombinator.com/item?id=22714705 and https://news.ycombinator.com/item?id=17014869 for more explanation.

Political topics take over everything if you let them, so we have to moderate HN to prevent it from becoming all-politics-all-flamewar-all-the-time. Do you think we should just let it burn?

Nobody's trying to "enforce" anyone to "focus 100% on business". I do worry whether users' addictions to sites like this keep them from doing better things.