Fantastic read!
Via the French Wikipedia page about this booklet [0], I learned that the probable author is Leo Rosten, author of “The Joys of Yiddish” [1]..!
That makes sense as “Joys” is an incredibly funny and witty read on the interplays between Yiddish and English in the US. Much recommended
From Rosten’s Wikipedia page [2]:
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In his book, The Joys of Yiddish, he defines the word chutzpah as "that quality enshrined in a man who, having killed his mother and father, throws himself on the mercy of the court because he is an orphan."
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[0] https://fr.wikipedia.org/wiki/Nos_amis_les_Français
(Funnily, the booklet’s title was translated to “Our friends the French”)