Let's see, expanded it's "the (or an) apocalypse of pseudonyms." In Greek, this would roughly be "ἀποκάλυψις ὧν ψευδωνῠ́μων." It's not impossible for a genitive

Let's see, expanded it's "the (or an) apocalypse of pseudonyms." In Greek, this would roughly be "ἀποκάλυψις ὧν ψευδωνῠ́μων." It's not impossible for a genitive like this to become a word, possibly "ἀποκάλυψευδώνῠμοι" (think of "φιλέλλην") -- although it's a little fanciful. There may even be precedent for a construct that puts "ψευδώνῠμοι" first. But ultimately I agree that the word the article offers seems tortured.