People who aren't familiar with the Sokal affair may miss the critical point that word salad was the author's whole intent, to expose the problem.
'a demonstrative scholarly hoax performed by Alan Sokal...to test the journal's intellectual rigor, specifically to investigate whether "a leading North American journal of cultural studies...[would] publish an article liberally salted with nonsense if (a) it sounded good and (b) it flattered the editors' ideological preconceptions."
'The article, "Transgressing the Boundaries: Towards a Transformative Hermeneutics of Quantum Gravity",[3] was published in the journal's spring/summer 1996 "Science Wars" issue. It proposed that quantum gravity is a social and linguistic construct. The journal did not practice academic peer review and it did not submit the article for outside expert review by a physicist.'
IMHO it is the most amazing academic comeuppance in history.
Edit: See the author's great book: Sokal, Alan; Bricmont, Jean (1998), Fashionable Nonsense: Postmodern Intellectuals' Abuse of Science (1st ed.), New York: Picador USA, ISBN 0-312-19545-1
But they also weren't treating it like a normal paper, and the lack of peer review is part of that.
More importantly, that being the big example, decades later, helps show just how rare something like that is for major conferences and journals.
An estimate of it happening 1% of the time would be much too high, but even if 1% was accurate it would still mean that endorsements are quite convincing.