Plenty of them are just liars. They'll look you dead in the eye and tell you "When I was your age, I worked 29 hours a day and 10 days per week".
Others simply don't want to acknowledge that the nature of their "work" is play. Flying from party to party with their gaggle of C-level friends, wining and dining clients and patrons, getting a Bill Clinton style office break between angry calls to your junior managers to "work harder!", playing Sim City or Factorio with a billion dollars in state money unconcerned with the end result because you already took out a big chunk as your share, golfing...
None of these assholes are doing manual labor. They're all just schmoozing with one another and collecting a vig on the cash that passes through their hands.