This is not a comment on Hurd. However, I am not always sure about “working hard”. There are many reasons why c-level people stay at work for long hours and not necessarily because they are “working hard”. How many times have we witnessed CEOs not owning up when things go wrong? I did not know is a common excuse.
Conversely, being at work twice as many hours won't get you twice as much work; and even if you actually work twice as much you probably won't even know twice as much.
...And in an organization with thousands of people there's more knowledge than even a hundred people can fully absorb. So I don't think this particular criticism is fair.
