> middle area where the person doesn’t understand Bay Area culture... > genuine questions get downvoted
The problem is these "genuine questions," for other people, are received as: bad faith questions, "sea lioning", poorly researched questions (e.g., simple query would find the answer), microagressions, dog whistles, sock puppet arguments, or other incendiary social media argument techniques.
Whether every instance of "hi, I'm new here, why is affirmative action a good thing?" is actually bad faith, etc. is irrelevant.
Diversity as a topic gets downvoted, flagged, and removed because the heat keeps happening on those threads. Regardless of which side you occupy or support or even if you claim to support no side at all, it consistently produces uncharitable and unproductive discussion.