I think you misunderstand. This is an HR matter, not an "Ethical AI" matter.
The official outputs and products of that department should (hopefully) be public and shared, I 100% agree with you. But that's not what this is about.
This matter in particular is an internal employee/employer dispute and dismissal, and is only public because of the high profile of the persons involved.
And what I meant that we'll never get the full story is that these kinds of situations are always more complicated than they appear. We are only seeing the tip of the iceberg, and are not privy to the history that led to this moment.
These kinds of things don't just happen out of nowhere.
If I had to guess who's "more right" here, I'd side with Timnit, personally.. but again I don't have all the facts, so it's just a gut feeling based on what I know about how large enterprises work.