It is very real, just look around the world. Even Mario Draghi is on the way out. Here is one take from Adrian Wooldridge at Bloomberg:
Leadership is most vital during a period of transition from one order to another. We are certainly in such a period now — not only from the neoliberal order to something much darker but also to a new era of smart machines — yet so far leadership is lacking. We call for leaders who are equal to the times, but nobody answers.
Kissinger offers two explanations for this troubling silence. The first lies in the evolution of meritocracy. (Full disclosure: He mentions a book I have written on this subject). The six leaders were all born outside the pale of the aristocratic elite that had hitherto dominated politics, and particularly foreign policy: Adenauer and Sadat were the sons of clerks, Thatcher and Nixon were the children of storekeepers, Lee’s parents were downwardly mobile. But theirs was a meritocracy with an aristocratic flavor. They went to elite schools and universities that provided an education in human excellence rather than just passing tests. In rubbing shoulders with members of the old elite, they absorbed some of its ethic of noblesse oblige (“For unto whomsoever much is given, of him shall be much required”) as well as its distaste for populism. Hence Lee’s recurring references to “Junzi” (Confucian gentlemen) and de Gaulle’s striving to become a “man of character.” They believed in history, tradition and, in most cases, God.
The world has become much more meritocratic since Kissinger’s six made their careers, not least when it comes to women and ethnic minorities. But the dilution of the aristocratic element in the mix may also have removed some of the grit that produced the pearl of leadership: Schools have given up providing an education in human excellence — the very idea would be triggering! — and ambitious young people speak less of obligation than of self-expression or personal advancement. The bonds of character and duty that once bound leaders to their people are dissolving.
There are further arguments — much more in fact — at the link. And here is an ngram on “leadership.”