Interesting is just something you ARE. The Zogu are effortlessly interesting, without even considering the notice they attracted. Leka I's appearance at the door of his plane with a bazooka was entirely natural. That is the crucial difference.
While Harry, and especially Meghan, are not at all interesting, no matter how desperately hard they try to be. Meghan's cooking show is ridiculed. But consider!! A flamboyant Zogu would never DREAM of doing a COOKING SHOW!!