David Stove: What is Wrong with our Thoughts? LessWrong
https://en.wikipedia.org/wiki/Obscurantism#Lacan To his students' complaint about the deliberate obscurity of his lectures, he replied: “The less you understand, the better you listen.” In the 1973 seminar Encore, he said that his Écrits (Writings) were not to be understood, but would effect a meaning in the reader, like that induced by mystical texts.
Pseudophilosophy#Romanticism According to Bunge, Pseudophilosophy is nonsense parading as deep philosophy. It may have existed since Lao-Tzu, but it was not taken seriously until about 1800, when the Romantics challenged the Enlightenment. By giving up rationality, they generated a lot of pseudophilosophy.