He is probably good at getting paid and getting credit for what he does, but he would need to be good at it to do any good for any other stakeholder, even more than he would need it to be a happy parasite inside the company. We don't know from the text if he cares about benefitting other stakeholders; I would bet that he cares more than average or he would not openly admit various unsavory facts about how things actually work - there's nothing in it for him to be open about it and the typical bigco parasite is unlikely to be open about these things and instead will repeat the party line about the place being a perfect meritocracy.