Seems more reasonable to me to focus on the head of the division since she has ultimate authority over it. Any incompetent people below her in the org structure are her responsibility. If they’re so bad, why didn’t she realize that and remove them? If you don’t ever want to be criticized then you shouldn’t seek out top management positions. He was also very critical of Sundar, is that also wrong because it could hurt his feelings? As for why he felt the need to air his dirty laundry like this, he must feel extremely aggrieved.