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
That's not my reading of the statement (it says "unacceptably racist language" and then condemns the manner of discussion rather than beliefs held).
Yeah, but that can be okay if you think it's higher priority to make a public statement about the contents of the email.
I initially didn't think such a statement was necessary because disagreeing with the email seemed like a no-brainer, so I didn't think anyone would have any uncertainty about the views of an organization like CEA. But apparently some (very few) people are not only defending the apology – which I've done myself – but argue that the original email was ~fine(?). I don't agree with such reactions (and Bostrom doesn't agree either and I see him a sincere person who wouldn't apologize like that if he didn't think he messed up), but they show that the public statement serves a purpose beyond just virtue-signalling to make sure there are no misunderstandings. (Note that it's possible to condemn someone's actions from long ago as"definitely not okay" without saying that the person is awful or evil!)