The "critical" element present in many critical information literacy (CIL) studies shows a commitment to the practical challenge of the power structures that shape current information regimes. In this article, we argue that it is necessary to analyse how such power structures, organised under a capitalist social order with neoliberal contours, benefit from disinformation, scientific denialism and class, race and gender oppression. In addition to discussing how philosophical notions of language and postmodern relativism appear in the present time, our main theoretical objective is to highlight some thoughts of Hegel, Marx and Bloch on the notions of dialectics, praxis and concrete utopia, aiming to contribute to strengthen the critical element that names and distinguishes CIL as a field of inquiry in library and information studies.