Is there a place where you can get video game news without politics?
Is there a social media hub without politics?
Is there a subreddit for atheism without politics?
Because of everyone having an Internet connection in their pocket, emotional meme battles ("politics") have infected every corner of modern society. You cannot escape.
The people who benefit from the emotional meme battling have made sure that you can't think logically about just about anything these days without hitting on a learned emotional trigger. Once you hit this trigger, you cannot reason about it any further, because your emotions override your powerful logical processing ability.
That's not necessarily the issue. There are places where people want to discuss politics, and places where those politics can be discussed constructively. A lot of HN members don't want HN to be a place where politics is a focus of a lot of discussion. It's also not necessarily a place where it can be discussed constructively. There are other places to be more actively political. HN doesn't need to be one of them.