Well, I think it important for a CEO not to alienate the employees of the company. But it depends on how he handles certain things. For instance, is he fishing for compliments and accolades and positive comments, or is he fishing for any problems that the employee has? Or is he just keeping the conversation to get to the know the employee on a personal level just to make sure people consider him just like anyone else within the company. Most of the people in upper management that I have worked aren't very honest with their employees that I have found. They usually are kind of paranoid about keeping their job so if they find someone that has a problem with how things are done, CEOs don't always want to hear it, let alone fix it. And instead of THANKING the employee for bringing up a problem within the company AND FIXING it, they do the opposite and don't fix the problem and then make the employee's life miserable for speaking up.
ALL companies have problems. People make mistakes or things can be done differently to improve the way they do business to either save money, reduce errors, increase sales, etc. And the CEOs and other members of upper management either don't always see these problems or even know how to fix them. But CEOs and upper management should always be in the mode of ALWAYS trying to find ways to improve the business, reduce errors, eliminate potential lawsuits, increase sales, increase productivity, etc.
Well, I certainly hope Tim Cook is one of those CEOs that wants to fix problems, improve things, and ultimately take care of those that need to be taken care of, and thanking those that bring issues up that can be rectified. IT'S ACTUALLY THEIR JOB.