Depending on the level of fame, yeah actually. I wouldn't want to be on a plane with Taylor Swift. Even with her in first class and me in the cheap seats. Imagine all the Swifties trying to get on your plane to see Taylor or just say they were on the same plane, it would be a nightmare. Not to mention the security threats there would be, how many extremists do you think have made a death threat at Taylor Swift? How would you feel getting on a plane someone threatened to blow up because Taylor Swift was abourd?
Like it or not the obsession with celebrity status necessitates things like private jets. No one needs to be as popular as Taylor Swift. That leaves the question of 'is it ethical to become so popular?' on the table but I am not interested in getting into that.