> It sounds like you mean to say that Smith, Ricardo, and Bastiat are more popular in casual online discussions of economics or economic history, because they aren't any more relevant to contemporary academic economics than Marx is.
No, I meant exactly what I said. Ricardian theory of comparative advantage, for example, remains being part of foundation of modern understanding of international trade. Every economics textbook teaches it. Same with Bastiat’s broken window fallacy. If their writings don’t get explicit citations in published papers, it’s for the same reason Pythagoras or Euclid don’t get citations in modern mathematics either: their results are so foundational that everyone knows them.
> If anything, extending the our gaze beyond the realm of the contemporary field of economics would reveal that Marx far outpaces these other names in citation value.
Of course, people keep citing Marx. Not economists though, or if they do, not favorably.