Of course CEOs are just people who make mistakes. In fact, a CEO is simply a specialized worker whose role is making high-level strategic decisions for the company. (And sometimes more tactical ones, depending on the company's scale.) Some are going to be better at that than others. The leverage of that decision-making allows a CEO to add significant value if they make good decisions, or subtract value if they make poor ones. Personally I agree that the best CEOs listen to feedback from other employees (as well as from customers and other stakeholders) and try to achieve a degree of consensus, but I would argue that that too is a skill that adds value.