If you read the book it becomes clear the author was a key enabler of Mark and Sheryl. Should she be allowed to comment? Of course. But don't think for a second she's a good person for doing so.

I have read the book, I didn’t mind her conscience surfacing at all. I’m not sure I’d want to go up against an organisation like Meta, and having first hand accounts of how these people love money and power more than they do values and people.