…it is hard to argue with the definition I once heard a French diplomat offer at a dinner party: “An intellectual is a person knowledgable in one field who speaks out only in others.”
— Tom Wolfe, “In the Land of the Rococo Marxists”

But before and before, and ever so long before any such contrivances were used, Lao Tzu wrote: «Those who know do not talk. Those who talk do not know».

So when in “Intellectuals and Socialism” by Friedrich A. Hayek we read:

The term “intellectuals,” however, does not at once convey a true picture of the large class to which we refer, and the fact that we have no better name by which to describe what we have called the secondhand dealers in ideas is not the least of the reasons why their power is not understood.

(raising a hand and jumping on the seat) Ooh! Teacher! I know this one! There is a better name for «secondhand dealer in ideas», a very old one. 6 letters, starts with P and ends with T.

That’s because they grew up in developing countries (one in Europe, one in Asia) where those views are mainstream.