So I don't know what the author actually intended. The train of thought in the article never gets particularly close to anything that resembles a paradox.
> [...], so much so that when it turned out that one of the books had “at least 95 separate passages” of plagiarism, including “long sections of a chapter on the cardiac health of giraffes.”
"so much so that when ..." what?!
meta commentary?
This is a common enough turn of phrase, at least in my corner of the world. What's your problem with it?
https://www.collinsdictionary.com/sentences/english/so-much-...
"So much so that when {occurrence} {outcome}"
This has the occurrence (the inclusion of the topic) but not the consequent outcome - seems like some anecdote about that author not recollecting the clearly memorable topic got mangled.
There's a missing word later in the piece as well.
You mean where the author, Andrew Gelman, "What I wanted to share today is a fascinating story from a magazine article about the affair, where the author, Joel Stein, 'Nearly all experts and celebrities use ghostwriters,' and then links to an amusing magazine article from 2009," and just completely skips over the verb?