> It's like the Hacker News comment guidelines, but for real life!

The difference is that Hacker News is a website and you can visit another to say rude things if you want with ease, not a country with subjects/citizens.

You can also visit another country to say rude things. I can see why this rule is controversial, but I don't think it's a major problem because it doesn't infringe on the right to have and share actual knowledge. Only emotional outbursts are forbidden (by this rule).