"OpenAI is governed by the board of the OpenAI Nonprofit, comprised of OpenAI Global, LLC employees Greg Brockman (Chairman & President), Ilya Sutskever (Chief Scientist), and Sam Altman (CEO), and non-employees Adam D’Angelo, Tasha McCauley, Helen Toner." [1]
Even without threats, no one wants to deal with the thousands of spur-of-the-moment DMs and emails that such a notable action would prompt. It's a good idea to go offline until things cool down. Any necessary statements can be made through channels, and so can the answers to questions.
you have to admin though, she made a highly controversial decision, and instead of confronting it and saying something through her own channel, she changed the name of the channel and made it private. And we're supposed to assume this is because men (specifically) are mean. Respectfully, feels like a bad take.
As an active board member she has certain legal obligations at this moment. This is why the Try Guys dragged their feet on making public statements about Ned Fulmer's expulsion from the company, and when they did finally make a statement did so as a group and explicitly stated that they couldn't talk about certain things.