On saying something profound under the guise of reaffirming present-day cultural norms.
Marxism revolved around the idea of there being ultimate meaning, a pin-downable thought in the center of societal structure.
Post-structuralism embraces lightly-ordered chaos. The idea is to be as dense, inaccessible, and exclusionary as possible while hitting all the correct public opinion buttons. The question is, how do you use this in your fiction?
Old-fashioned writing (Good, but unpopular):
Boris lay down his newspaper, and studied the figure of Marmalade across the street. Good woman, Marmie. Boris fingered the slip of paper he had written the night before; it was tucked into the pocket of his shirt, and he had spritzed it lightly with rose-water.
She would forgive him, after she read the note. The priests of Norgun had given Boris direction, and Boris would obey.
Boris sighed, and got heavily to his feet. He drew up the magical staff that leaned on the arm of his chair, and tapped it twice against the floor. Marmie would not see him coming. His body vanished, and he went down living room steps, and to the front door.
New-fangled writing (Bad, but popular):
Marmie’s neat figure taunted Boris; her home was an affront to him. Never be normal, never be like her. Boris tapped the newspaper harshly against his knee. He had been scanning the personal ads; he flung the paper against the floor.
I’ll show her, I’ll be the one they take. Boris took the note from his shirt pocket, and studied it. He pressed it to his nose, and turned over the paper. The priests of Norgun will not know, not if I change into her shape. They will not know.
Boris studied Marmie as she watered her plants. His fingers tapped restlessly against his long walking stick. Boris snatched up the stick, and uttered the magic words; he vanished, and felt the heavy beating of his heart as he went towards his own front door.
The nuanced necessity here is to incorporate meaning; falling into the trap of post-structuralist showmanship leads to a lack of cohesive vision; the author fails to create a final answer, and the work subsequently suffers from an absence of overarching, socially-applicable solvency.