From Why Liberalism Failed (2018) by Patrick J. Deneen:

doubts within the humanities were a fertile seedbed for self-destructive tendencies. Inspired by Heideggerian theories that placed primacy on the liberation of the will, first poststructuralism and then postmodernism took root. These and other approaches, while apparently hostile to the rationalist claims of the sciences, were embraced out of the need to conform to the academic demands, set by the natural sciences, for “progressive” knowledge. Faculty could demonstrate their progessiveness by showing the backwardness of the texts; they could “create knowledge” by showing their superiority to the authors they studied; they could display their antitraditionalism by attacking the very books that were the basis of their discipline. Philosophies that preached “the hermeneutics of suspicion,” that aimed to expose the way texts were deeply informed by inegalitarian prejudices, and that even questioned the idea that texts contained a “teaching” as intended by the author, offered the humanities the possibility of proving themselves relevant in the terms set by the modern scientific approach. By adopting a jargon comprehensible only to “experts,” they could emulate the scientific priesthood, even if by doing so they betrayed the humanities’ original mandate to guide students through their cultural inheritance. Professors in the humanities showed their worth by destroying the thing they studied.