Every country needs its elites in politics, economics, the military and, not least in the scientific field. Governments need their young talent to showcase them to the world. They work systematically to bring in young talent at graduate programs at each institution. And they work systematically at government level for them to have become professors as young.
Are they really that outstanding? Or are they normal talented students as well as thousands of other students? But they will still be chosen perhaps for their contacts, because they are children of people with key positions, or because they are children of people with economic or political power.
Some of them are certainly very talented, but most of these ”gifted geniuses” are needed as window dressing.