That's my question reworded: she wound up being in charge of this particular sinking ship at this particular point in time. Did she hole it below the waterline personally or no?
Does it matter? The one person who takes responsibility for what occurs in a huge organization like Xbox is the person driving the ship. What's done is done. She is responsibile for the layoffs, whether they were made necessary by her or not. She is responsible for choosing to fire the idTech Director of Engine Tech. She owns all of it, because that is literally her job as CEO. Boo hoo her predecessor made terrible decisions too.