Excellent article. Celebrity is something we seek to become, to emulate, or to admire. We humans need role models.
This is potentially a positive effect of royalty, when the royals are exemplars of virtue such as Queen Elizabeth II and Rama IX of Thailand. (In the first case, her successor is likewise admired. In the second case, not so much.)
This is why, in our proposal for a new kind of model society, one of the elements is a new kind of royalty; entirely about service to the community and without personal gain of any sort. This will be the living fulfillment of Lafayette's ideal of noblesse oblige.
Of course, such can only function when the royals--like other residents--have their material needs met through automated production. That is another element.