Actually I'm surprised there hasn't been an anonymous website with strict rules and actually decent moderation; every single spin-off of the site also takes a freeform approach to everything
The challenge is that this is not an evolutionarily-stable-strategy from a game theoretic perception. When a person from a culture with a weak conception of personal identity meets a person from a culture with a strong conception of personal identity, the former tends to subordinate their desires to the latter, because that's what it means to have a weak conception of identity. As a result, the sphere of public discourse gets dominated by all those individuals with strong identities, even if the majority of people on earth do not have one. (Growing up half-Asian, this was a major source of angst for me, and still something I struggle with.)