So basically Gebru was fired for turning Googles fake ethics group into a real ethics group?
She threatened to resign if her demands were met, so Google pre-empted it by accepting her resignation.
The narrative around her being “fired” is completely false and is a lie that needs to be stopped in its track.
Do you likewise honestly think that if she applied for unemployment services in the US should we be denied because of willful termination from her last job?
Everyone I know who has been fired, when it's reported to the company, the phrasing is always "Person X and the company have come to a mutual agreement", but in my experience it's never really mutual.
I've known many coworkers that threaten to quit over issues, but it still depends on them making that choice formally. Otherwise they are fired.