Effective altruism is based on the core belief that all people count equally. We unequivocally condemn Nick Bostrom’s recklessly flawed and reprehensible words. We reject this unacceptable racist language, and the callous discussion of ideas that can and have harmed Black people. It is fundamentally inconsistent with our mission of building an inclusive and welcoming community.
— The Centre for Effective Altruism
Speaking as a moderator: the Forum currently doesn't have a policy banning any specific words, although we might change that.
But we do have norms about kindness, avoiding unnecessary offense, and behaving with civility, and many people (reasonably) find use of the n-word extremely hurtful or upsetting, even if it's used as an example or in a quote.
Overall, I think the word's use here is not helpful and violates those norms, so I ask you to remove it.
I'll continue discussing with the moderation team, both to develop an overall policy and to see if they disagree with my decision here.