[JohnFen]

I'm pretty confident it's not a personal scandal (or if it is, it's one that is truly monumental and that there hasn't even been a rumor of).

If it was a personal scandal, the messaging around his dismissal would have been very, very different. The messaging they gave makes it clear that whatever dirty deed he did, he did it to OpenAI itself.

[nostrademons]

Or to the public on behalf of OpenAI.

[SamAltmanRapist]

There were rumours apparently, but they were suppressed intentionally and very effectively it appears.

[JohnFen]

What I was meaning to say in my comment was that the rumors and accusations relating to his sister, even if entirely true, are not monumental enough of a personal scandal to explain how the board behaved while firing him.

They'd probably still fire him, but would have done so in a very different way.