Your own citation proves you wrong. One of the Social Text editors was so convinced of the legitimacy of the work that even after being told it was a hoax, "suspected that Sokal's parody was nothing of the sort, and that his admission represented a change of heart, or a folding of his intellectual resolve."

That is how disconnected they were from anything resembling a "methodology" that could detect basic falsehoods nestled amidst pretentious language and reverential citations of suitably fashionable authorities.

Scientific theories generally yield testable hypotheses. Name one testable hypothesis that's ever come out of "critical theory".