USAID lamented [that] users were able to build communities to create “populist expertise” and develop opinions and viewpoints that challenge official U.S. government narratives.

Edit: I googled “populist expertise” (never seen that term before) and all the results were papers about QAnon. It must be some new term for any claimed wisdom that’s anti-establishment in character. They’d probably apply the term to Marxists too, since liberals consider historical materialism a conspiracy theory.