Throughout his postwar career, he frequently clashed with communist government economists regarding their inflexibility in applying Karl Marx's economic principles. An outspoken critic of Stalinism, Lipinski warned that "over-organization" of economic policy and rigid adherence to the party line, even in the face of rapidly changing conditions that required immediate action beyond the scope of the routine, would stifle growth. Because of his criticism, when the hard line Stalinist faction of Bolesław Bierut gained power in 1949, Lipiński was forced to resign as chair of economics at the university and banned from delivering some of his lectures.