Because the old guard wanted it to remain a cliquey non-profit filled to the brim with EA, AI Alignment, and OpenPhilanthropy types, but the current OpenAI is now an enterprise company.
This is just Sam Altman cleaning house after the attempted corporate coup a year ago.
CEOs get fired all the time and company puts out a statement.
I've never seen "we won't tell you why we fired our CEO" anywhere.
now he is back making totally ridiculous statments like 'AI is going to solve all of physics' or that 'AI is going to clone my brain by 2027'
This is a strange company.