The board may have been incompetent and shortsighted. Perhaps they should even try and bring Altman back, and reform themselves out of existence. But why would the vast majority of the workforce back an open letter failing to signal where they stand on the crucial issue - on the purpose of OpenAI and their collective work? Given the stakes which the AI community likes to claim are at issue in the development of AGI, that strikes me as strange and concerning.
I have no inside information. I don't know anyone at Open AI. This is all purely speculation.
Now that that's out out the way, here is my guess: money.
These people never joined OpenAI to "advance sciences and arts" or to "change the world". They joined OpenAI to earn money. They think they can make more money with Sam Altman in charge.
Once again, this is completely all speculation. I have not spoken to anyone at Open AI or anyone at Microsoft or anyone at all really.
I'd imagine there's some internal political drama going on or something we're missing out on.
Why do you think absolute certainty is required here? It seems to me that "more probable than not" is perfectly adequate to explain the data.